From 6bf0a5cb5034a7e684dcc3500e841785237ce2dd Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 7 Apr 2024 19:32:43 +0200
Subject: Adding upstream version 1:115.7.0.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 testing/web-platform/tests/mixed-content/META.yml  |   3 +
 testing/web-platform/tests/mixed-content/README.md |   4 +
 .../tests/mixed-content/blob.https.sub.html        |  54 +++
 .../tests/mixed-content/csp.https.window.js        |  41 ++
 .../mixed-content/csp.https.window.js.headers      |   1 +
 .../opt-in/fetch.https.html                        | 172 ++++++++
 .../opt-in/fetch.https.html.headers                |   1 +
 .../opt-in/websocket.https.html                    |  67 ++++
 .../opt-in/websocket.https.html.headers            |   1 +
 .../opt-in/xhr.https.html                          | 172 ++++++++
 .../opt-in/xhr.https.html.headers                  |   1 +
 .../opt-in/fetch.https.html                        |  68 ++++
 .../opt-in/websocket.https.html                    |  68 ++++
 .../opt-in/xhr.https.html                          |  68 ++++
 .../unset/fetch.https.html                         | 142 +++++++
 .../unset/websocket.https.html                     |  67 ++++
 .../unset/xhr.https.html                           | 142 +++++++
 .../opt-in/fetch.https.html                        | 232 +++++++++++
 .../opt-in/websocket.https.html                    |  85 ++++
 .../opt-in/xhr.https.html                          | 232 +++++++++++
 .../unset/fetch.https.html                         | 142 +++++++
 .../unset/fetch.https.html.headers                 |   1 +
 .../unset/websocket.https.html                     |  67 ++++
 .../unset/websocket.https.html.headers             |   1 +
 .../unset/xhr.https.html                           | 142 +++++++
 .../unset/xhr.https.html.headers                   |   1 +
 .../opt-in/fetch.https.html                        | 172 ++++++++
 .../opt-in/fetch.https.html.headers                |   1 +
 .../opt-in/websocket.https.html                    |  67 ++++
 .../opt-in/websocket.https.html.headers            |   1 +
 .../opt-in/xhr.https.html                          | 172 ++++++++
 .../opt-in/xhr.https.html.headers                  |   1 +
 .../opt-in/fetch.https.html                        |  68 ++++
 .../opt-in/websocket.https.html                    |  68 ++++
 .../opt-in/xhr.https.html                          |  68 ++++
 .../unset/fetch.https.html                         | 142 +++++++
 .../unset/websocket.https.html                     |  67 ++++
 .../unset/xhr.https.html                           | 142 +++++++
 .../opt-in/fetch.https.html                        | 232 +++++++++++
 .../opt-in/websocket.https.html                    |  85 ++++
 .../opt-in/xhr.https.html                          | 232 +++++++++++
 .../unset/fetch.https.html                         | 142 +++++++
 .../unset/fetch.https.html.headers                 |   1 +
 .../unset/websocket.https.html                     |  67 ++++
 .../unset/websocket.https.html.headers             |   1 +
 .../unset/xhr.https.html                           | 142 +++++++
 .../unset/xhr.https.html.headers                   |   1 +
 .../gen/top.http-rp/opt-in/audio-tag.https.html    | 122 ++++++
 .../opt-in/audio-tag.https.html.headers            |   1 +
 .../gen/top.http-rp/opt-in/beacon.https.html       | 122 ++++++
 .../top.http-rp/opt-in/beacon.https.html.headers   |   1 +
 .../gen/top.http-rp/opt-in/fetch.https.html        | 122 ++++++
 .../top.http-rp/opt-in/fetch.https.html.headers    |   1 +
 .../gen/top.http-rp/opt-in/img-tag.https.html      | 122 ++++++
 .../top.http-rp/opt-in/img-tag.https.html.headers  |   1 +
 .../gen/top.http-rp/opt-in/link-css-tag.https.html | 122 ++++++
 .../opt-in/link-css-tag.https.html.headers         |   1 +
 .../opt-in/link-prefetch-tag.https.html            | 122 ++++++
 .../opt-in/link-prefetch-tag.https.html.headers    |   1 +
 .../gen/top.http-rp/opt-in/object-tag.https.html   | 122 ++++++
 .../opt-in/object-tag.https.html.headers           |   1 +
 .../gen/top.http-rp/opt-in/picture-tag.https.html  | 122 ++++++
 .../opt-in/picture-tag.https.html.headers          |   1 +
 .../opt-in/script-tag-dynamic-import.https.html    |  42 ++
 .../script-tag-dynamic-import.https.html.headers   |   1 +
 .../gen/top.http-rp/opt-in/script-tag.https.html   | 122 ++++++
 .../opt-in/script-tag.https.html.headers           |   1 +
 .../opt-in/sharedworker-classic.https.html         |  62 +++
 .../opt-in/sharedworker-classic.https.html.headers |   1 +
 .../opt-in/sharedworker-import-data.https.html     | 122 ++++++
 .../sharedworker-import-data.https.html.headers    |   1 +
 .../opt-in/sharedworker-import.https.html          | 122 ++++++
 .../opt-in/sharedworker-import.https.html.headers  |   1 +
 .../opt-in/sharedworker-module.https.html          |  62 +++
 .../opt-in/sharedworker-module.https.html.headers  |   1 +
 .../gen/top.http-rp/opt-in/video-tag.https.html    | 122 ++++++
 .../opt-in/video-tag.https.html.headers            |   1 +
 .../gen/top.http-rp/opt-in/websocket.https.html    |  52 +++
 .../opt-in/websocket.https.html.headers            |   1 +
 .../top.http-rp/opt-in/worker-classic.https.html   |  62 +++
 .../opt-in/worker-classic.https.html.headers       |   1 +
 .../opt-in/worker-import-data.https.html           | 122 ++++++
 .../opt-in/worker-import-data.https.html.headers   |   1 +
 .../top.http-rp/opt-in/worker-import.https.html    | 122 ++++++
 .../opt-in/worker-import.https.html.headers        |   1 +
 .../top.http-rp/opt-in/worker-module.https.html    |  62 +++
 .../opt-in/worker-module.https.html.headers        |   1 +
 .../worklet-animation-import-data.https.html       | 122 ++++++
 ...orklet-animation-import-data.https.html.headers |   1 +
 .../opt-in/worklet-animation.https.html            | 122 ++++++
 .../opt-in/worklet-animation.https.html.headers    |   1 +
 .../opt-in/worklet-audio-import-data.https.html    | 122 ++++++
 .../worklet-audio-import-data.https.html.headers   |   1 +
 .../top.http-rp/opt-in/worklet-audio.https.html    | 122 ++++++
 .../opt-in/worklet-audio.https.html.headers        |   1 +
 .../opt-in/worklet-layout-import-data.https.html   | 122 ++++++
 .../worklet-layout-import-data.https.html.headers  |   1 +
 .../top.http-rp/opt-in/worklet-layout.https.html   | 122 ++++++
 .../opt-in/worklet-layout.https.html.headers       |   1 +
 .../opt-in/worklet-paint-import-data.https.html    | 122 ++++++
 .../worklet-paint-import-data.https.html.headers   |   1 +
 .../top.http-rp/opt-in/worklet-paint.https.html    | 122 ++++++
 .../opt-in/worklet-paint.https.html.headers        |   1 +
 .../gen/top.http-rp/opt-in/xhr.https.html          | 122 ++++++
 .../gen/top.http-rp/opt-in/xhr.https.html.headers  |   1 +
 .../gen/top.meta/opt-in/audio-tag.https.html       |  53 +++
 .../gen/top.meta/opt-in/beacon.https.html          |  53 +++
 .../gen/top.meta/opt-in/fetch.https.html           |  53 +++
 .../gen/top.meta/opt-in/img-tag.https.html         |  53 +++
 .../gen/top.meta/opt-in/link-css-tag.https.html    |  53 +++
 .../top.meta/opt-in/link-prefetch-tag.https.html   |  53 +++
 .../gen/top.meta/opt-in/object-tag.https.html      |  53 +++
 .../gen/top.meta/opt-in/picture-tag.https.html     |  53 +++
 .../opt-in/script-tag-dynamic-import.https.html    |  33 ++
 .../gen/top.meta/opt-in/script-tag.https.html      |  53 +++
 .../opt-in/sharedworker-classic.https.html         |  43 ++
 .../opt-in/sharedworker-import-data.https.html     |  53 +++
 .../top.meta/opt-in/sharedworker-import.https.html |  53 +++
 .../top.meta/opt-in/sharedworker-module.https.html |  43 ++
 .../gen/top.meta/opt-in/video-tag.https.html       |  53 +++
 .../gen/top.meta/opt-in/websocket.https.html       |  53 +++
 .../gen/top.meta/opt-in/worker-classic.https.html  |  43 ++
 .../top.meta/opt-in/worker-import-data.https.html  |  53 +++
 .../gen/top.meta/opt-in/worker-import.https.html   |  53 +++
 .../gen/top.meta/opt-in/worker-module.https.html   |  43 ++
 .../worklet-animation-import-data.https.html       |  53 +++
 .../top.meta/opt-in/worklet-animation.https.html   |  53 +++
 .../opt-in/worklet-audio-import-data.https.html    |  53 +++
 .../gen/top.meta/opt-in/worklet-audio.https.html   |  53 +++
 .../opt-in/worklet-layout-import-data.https.html   |  53 +++
 .../gen/top.meta/opt-in/worklet-layout.https.html  |  53 +++
 .../opt-in/worklet-paint-import-data.https.html    |  53 +++
 .../gen/top.meta/opt-in/worklet-paint.https.html   |  53 +++
 .../gen/top.meta/opt-in/xhr.https.html             |  53 +++
 .../gen/top.meta/unset/audio-tag.https.html        | 102 +++++
 .../gen/top.meta/unset/beacon.https.html           | 102 +++++
 .../gen/top.meta/unset/fetch.https.html            | 102 +++++
 .../gen/top.meta/unset/img-tag.https.html          | 102 +++++
 .../gen/top.meta/unset/link-css-tag.https.html     | 102 +++++
 .../top.meta/unset/link-prefetch-tag.https.html    | 102 +++++
 .../gen/top.meta/unset/object-tag.https.html       | 102 +++++
 .../gen/top.meta/unset/picture-tag.https.html      | 102 +++++
 .../unset/script-tag-dynamic-import.https.html     |  42 ++
 .../gen/top.meta/unset/script-tag.https.html       | 102 +++++
 .../top.meta/unset/sharedworker-classic.https.html |  62 +++
 .../unset/sharedworker-import-data.https.html      | 102 +++++
 .../top.meta/unset/sharedworker-import.https.html  | 102 +++++
 .../top.meta/unset/sharedworker-module.https.html  |  62 +++
 .../gen/top.meta/unset/video-tag.https.html        | 102 +++++
 .../gen/top.meta/unset/websocket.https.html        |  52 +++
 .../gen/top.meta/unset/worker-classic.https.html   |  62 +++
 .../top.meta/unset/worker-import-data.https.html   | 102 +++++
 .../gen/top.meta/unset/worker-import.https.html    | 102 +++++
 .../gen/top.meta/unset/worker-module.https.html    |  62 +++
 .../unset/worklet-animation-import-data.https.html | 102 +++++
 .../top.meta/unset/worklet-animation.https.html    | 102 +++++
 .../unset/worklet-audio-import-data.https.html     | 102 +++++
 .../gen/top.meta/unset/worklet-audio.https.html    | 102 +++++
 .../unset/worklet-layout-import-data.https.html    | 102 +++++
 .../gen/top.meta/unset/worklet-layout.https.html   | 102 +++++
 .../unset/worklet-paint-import-data.https.html     | 102 +++++
 .../gen/top.meta/unset/worklet-paint.https.html    | 102 +++++
 .../gen/top.meta/unset/xhr.https.html              | 102 +++++
 .../opt-in/fetch.https.html                        | 172 ++++++++
 .../opt-in/fetch.https.html.headers                |   1 +
 .../opt-in/websocket.https.html                    |  67 ++++
 .../opt-in/websocket.https.html.headers            |   1 +
 .../opt-in/xhr.https.html                          | 172 ++++++++
 .../opt-in/xhr.https.html.headers                  |   1 +
 .../opt-in/fetch.https.html                        |  68 ++++
 .../opt-in/websocket.https.html                    |  68 ++++
 .../worker-classic-data.meta/opt-in/xhr.https.html |  68 ++++
 .../unset/fetch.https.html                         | 142 +++++++
 .../unset/websocket.https.html                     |  67 ++++
 .../worker-classic-data.meta/unset/xhr.https.html  | 142 +++++++
 .../worker-classic.http-rp/opt-in/fetch.https.html | 232 +++++++++++
 .../opt-in/websocket.https.html                    |  85 ++++
 .../opt-in/worker-classic.https.html               | 106 +++++
 .../opt-in/worker-module.https.html                | 106 +++++
 .../worker-classic.http-rp/opt-in/xhr.https.html   | 232 +++++++++++
 .../worker-classic.http-rp/unset/fetch.https.html  | 142 +++++++
 .../unset/fetch.https.html.headers                 |   1 +
 .../unset/websocket.https.html                     |  67 ++++
 .../unset/websocket.https.html.headers             |   1 +
 .../unset/worker-classic.https.html                |  82 ++++
 .../unset/worker-classic.https.html.headers        |   1 +
 .../unset/worker-module.https.html                 |  82 ++++
 .../unset/worker-module.https.html.headers         |   1 +
 .../worker-classic.http-rp/unset/xhr.https.html    | 142 +++++++
 .../unset/xhr.https.html.headers                   |   1 +
 .../opt-in/fetch.https.html                        | 172 ++++++++
 .../opt-in/fetch.https.html.headers                |   1 +
 .../opt-in/websocket.https.html                    |  67 ++++
 .../opt-in/websocket.https.html.headers            |   1 +
 .../opt-in/xhr.https.html                          | 172 ++++++++
 .../opt-in/xhr.https.html.headers                  |   1 +
 .../opt-in/fetch.https.html                        |  68 ++++
 .../opt-in/websocket.https.html                    |  68 ++++
 .../worker-module-data.meta/opt-in/xhr.https.html  |  68 ++++
 .../worker-module-data.meta/unset/fetch.https.html | 142 +++++++
 .../unset/websocket.https.html                     |  67 ++++
 .../worker-module-data.meta/unset/xhr.https.html   | 142 +++++++
 .../worker-module.http-rp/opt-in/fetch.https.html  | 232 +++++++++++
 .../opt-in/websocket.https.html                    |  85 ++++
 .../opt-in/worker-classic.https.html               | 106 +++++
 .../opt-in/worker-module.https.html                | 106 +++++
 .../worker-module.http-rp/opt-in/xhr.https.html    | 232 +++++++++++
 .../worker-module.http-rp/unset/fetch.https.html   | 142 +++++++
 .../unset/fetch.https.html.headers                 |   1 +
 .../unset/websocket.https.html                     |  67 ++++
 .../unset/websocket.https.html.headers             |   1 +
 .../unset/worker-classic.https.html                |  82 ++++
 .../unset/worker-classic.https.html.headers        |   1 +
 .../unset/worker-module.https.html                 |  82 ++++
 .../unset/worker-module.https.html.headers         |   1 +
 .../gen/worker-module.http-rp/unset/xhr.https.html | 142 +++++++
 .../unset/xhr.https.html.headers                   |   1 +
 .../tests/mixed-content/generic/sanity-checker.js  |  53 +++
 .../tests/mixed-content/generic/test-case.sub.js   |  61 +++
 .../tests/mixed-content/imageset.https.sub.html    |  31 ++
 .../tests/mixed-content/nested-iframes.window.js   |  25 ++
 .../tests/mixed-content/resources/blob-popup.html  |  10 +
 .../mixed-content/resources/middle-frame.html      |  39 ++
 .../web-platform/tests/mixed-content/spec.src.json | 437 +++++++++++++++++++++
 .../autoupgrades/audio-upgrade.https.sub.html      |  40 ++
 .../autoupgrades/image-upgrade.https.sub.html      |  43 ++
 .../autoupgrades/mixed-content-cors.https.sub.html |  84 ++++
 .../autoupgrades/video-upgrade.https.sub.html      |  41 ++
 .../mixed-content/tentative/resources/pass.png     | Bin 0 -> 1689 bytes
 .../mixed-content/tentative/resources/test.ogv     | Bin 0 -> 2344665 bytes
 .../mixed-content/tentative/resources/test.wav     | Bin 0 -> 353022 bytes
 231 files changed, 16553 insertions(+)
 create mode 100644 testing/web-platform/tests/mixed-content/META.yml
 create mode 100644 testing/web-platform/tests/mixed-content/README.md
 create mode 100644 testing/web-platform/tests/mixed-content/blob.https.sub.html
 create mode 100644 testing/web-platform/tests/mixed-content/csp.https.window.js
 create mode 100644 testing/web-platform/tests/mixed-content/csp.https.window.js.headers
 create mode 100644 testing/web-platform/tests/mixed-content/gen/sharedworker-classic-data.http-rp/opt-in/fetch.https.html
 create mode 100644 testing/web-platform/tests/mixed-content/gen/sharedworker-classic-data.http-rp/opt-in/fetch.https.html.headers
 create mode 100644 testing/web-platform/tests/mixed-content/gen/sharedworker-classic-data.http-rp/opt-in/websocket.https.html
 create mode 100644 testing/web-platform/tests/mixed-content/gen/sharedworker-classic-data.http-rp/opt-in/websocket.https.html.headers
 create mode 100644 testing/web-platform/tests/mixed-content/gen/sharedworker-classic-data.http-rp/opt-in/xhr.https.html
 create mode 100644 testing/web-platform/tests/mixed-content/gen/sharedworker-classic-data.http-rp/opt-in/xhr.https.html.headers
 create mode 100644 testing/web-platform/tests/mixed-content/gen/sharedworker-classic-data.meta/opt-in/fetch.https.html
 create mode 100644 testing/web-platform/tests/mixed-content/gen/sharedworker-classic-data.meta/opt-in/websocket.https.html
 create mode 100644 testing/web-platform/tests/mixed-content/gen/sharedworker-classic-data.meta/opt-in/xhr.https.html
 create mode 100644 testing/web-platform/tests/mixed-content/gen/sharedworker-classic-data.meta/unset/fetch.https.html
 create mode 100644 testing/web-platform/tests/mixed-content/gen/sharedworker-classic-data.meta/unset/websocket.https.html
 create mode 100644 testing/web-platform/tests/mixed-content/gen/sharedworker-classic-data.meta/unset/xhr.https.html
 create mode 100644 testing/web-platform/tests/mixed-content/gen/sharedworker-classic.http-rp/opt-in/fetch.https.html
 create mode 100644 testing/web-platform/tests/mixed-content/gen/sharedworker-classic.http-rp/opt-in/websocket.https.html
 create mode 100644 testing/web-platform/tests/mixed-content/gen/sharedworker-classic.http-rp/opt-in/xhr.https.html
 create mode 100644 testing/web-platform/tests/mixed-content/gen/sharedworker-classic.http-rp/unset/fetch.https.html
 create mode 100644 testing/web-platform/tests/mixed-content/gen/sharedworker-classic.http-rp/unset/fetch.https.html.headers
 create mode 100644 testing/web-platform/tests/mixed-content/gen/sharedworker-classic.http-rp/unset/websocket.https.html
 create mode 100644 testing/web-platform/tests/mixed-content/gen/sharedworker-classic.http-rp/unset/websocket.https.html.headers
 create mode 100644 testing/web-platform/tests/mixed-content/gen/sharedworker-classic.http-rp/unset/xhr.https.html
 create mode 100644 testing/web-platform/tests/mixed-content/gen/sharedworker-classic.http-rp/unset/xhr.https.html.headers
 create mode 100644 testing/web-platform/tests/mixed-content/gen/sharedworker-module-data.http-rp/opt-in/fetch.https.html
 create mode 100644 testing/web-platform/tests/mixed-content/gen/sharedworker-module-data.http-rp/opt-in/fetch.https.html.headers
 create mode 100644 testing/web-platform/tests/mixed-content/gen/sharedworker-module-data.http-rp/opt-in/websocket.https.html
 create mode 100644 testing/web-platform/tests/mixed-content/gen/sharedworker-module-data.http-rp/opt-in/websocket.https.html.headers
 create mode 100644 testing/web-platform/tests/mixed-content/gen/sharedworker-module-data.http-rp/opt-in/xhr.https.html
 create mode 100644 testing/web-platform/tests/mixed-content/gen/sharedworker-module-data.http-rp/opt-in/xhr.https.html.headers
 create mode 100644 testing/web-platform/tests/mixed-content/gen/sharedworker-module-data.meta/opt-in/fetch.https.html
 create mode 100644 testing/web-platform/tests/mixed-content/gen/sharedworker-module-data.meta/opt-in/websocket.https.html
 create mode 100644 testing/web-platform/tests/mixed-content/gen/sharedworker-module-data.meta/opt-in/xhr.https.html
 create mode 100644 testing/web-platform/tests/mixed-content/gen/sharedworker-module-data.meta/unset/fetch.https.html
 create mode 100644 testing/web-platform/tests/mixed-content/gen/sharedworker-module-data.meta/unset/websocket.https.html
 create mode 100644 testing/web-platform/tests/mixed-content/gen/sharedworker-module-data.meta/unset/xhr.https.html
 create mode 100644 testing/web-platform/tests/mixed-content/gen/sharedworker-module.http-rp/opt-in/fetch.https.html
 create mode 100644 testing/web-platform/tests/mixed-content/gen/sharedworker-module.http-rp/opt-in/websocket.https.html
 create mode 100644 testing/web-platform/tests/mixed-content/gen/sharedworker-module.http-rp/opt-in/xhr.https.html
 create mode 100644 testing/web-platform/tests/mixed-content/gen/sharedworker-module.http-rp/unset/fetch.https.html
 create mode 100644 testing/web-platform/tests/mixed-content/gen/sharedworker-module.http-rp/unset/fetch.https.html.headers
 create mode 100644 testing/web-platform/tests/mixed-content/gen/sharedworker-module.http-rp/unset/websocket.https.html
 create mode 100644 testing/web-platform/tests/mixed-content/gen/sharedworker-module.http-rp/unset/websocket.https.html.headers
 create mode 100644 testing/web-platform/tests/mixed-content/gen/sharedworker-module.http-rp/unset/xhr.https.html
 create mode 100644 testing/web-platform/tests/mixed-content/gen/sharedworker-module.http-rp/unset/xhr.https.html.headers
 create mode 100644 testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/audio-tag.https.html
 create mode 100644 testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/audio-tag.https.html.headers
 create mode 100644 testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/beacon.https.html
 create mode 100644 testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/beacon.https.html.headers
 create mode 100644 testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/fetch.https.html
 create mode 100644 testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/fetch.https.html.headers
 create mode 100644 testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/img-tag.https.html
 create mode 100644 testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/img-tag.https.html.headers
 create mode 100644 testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/link-css-tag.https.html
 create mode 100644 testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/link-css-tag.https.html.headers
 create mode 100644 testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/link-prefetch-tag.https.html
 create mode 100644 testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/link-prefetch-tag.https.html.headers
 create mode 100644 testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/object-tag.https.html
 create mode 100644 testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/object-tag.https.html.headers
 create mode 100644 testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/picture-tag.https.html
 create mode 100644 testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/picture-tag.https.html.headers
 create mode 100644 testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/script-tag-dynamic-import.https.html
 create mode 100644 testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/script-tag-dynamic-import.https.html.headers
 create mode 100644 testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/script-tag.https.html
 create mode 100644 testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/script-tag.https.html.headers
 create mode 100644 testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/sharedworker-classic.https.html
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 create mode 100644 testing/web-platform/tests/mixed-content/gen/top.meta/unset/video-tag.https.html
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 create mode 100644 testing/web-platform/tests/mixed-content/gen/top.meta/unset/xhr.https.html
 create mode 100644 testing/web-platform/tests/mixed-content/gen/worker-classic-data.http-rp/opt-in/fetch.https.html
 create mode 100644 testing/web-platform/tests/mixed-content/gen/worker-classic-data.http-rp/opt-in/fetch.https.html.headers
 create mode 100644 testing/web-platform/tests/mixed-content/gen/worker-classic-data.http-rp/opt-in/websocket.https.html
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 create mode 100644 testing/web-platform/tests/mixed-content/gen/worker-classic-data.http-rp/opt-in/xhr.https.html
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 create mode 100644 testing/web-platform/tests/mixed-content/gen/worker-module.http-rp/unset/xhr.https.html.headers
 create mode 100644 testing/web-platform/tests/mixed-content/generic/sanity-checker.js
 create mode 100644 testing/web-platform/tests/mixed-content/generic/test-case.sub.js
 create mode 100644 testing/web-platform/tests/mixed-content/imageset.https.sub.html
 create mode 100644 testing/web-platform/tests/mixed-content/nested-iframes.window.js
 create mode 100644 testing/web-platform/tests/mixed-content/resources/blob-popup.html
 create mode 100644 testing/web-platform/tests/mixed-content/resources/middle-frame.html
 create mode 100644 testing/web-platform/tests/mixed-content/spec.src.json
 create mode 100644 testing/web-platform/tests/mixed-content/tentative/autoupgrades/audio-upgrade.https.sub.html
 create mode 100644 testing/web-platform/tests/mixed-content/tentative/autoupgrades/image-upgrade.https.sub.html
 create mode 100644 testing/web-platform/tests/mixed-content/tentative/autoupgrades/mixed-content-cors.https.sub.html
 create mode 100644 testing/web-platform/tests/mixed-content/tentative/autoupgrades/video-upgrade.https.sub.html
 create mode 100644 testing/web-platform/tests/mixed-content/tentative/resources/pass.png
 create mode 100644 testing/web-platform/tests/mixed-content/tentative/resources/test.ogv
 create mode 100644 testing/web-platform/tests/mixed-content/tentative/resources/test.wav

(limited to 'testing/web-platform/tests/mixed-content')

diff --git a/testing/web-platform/tests/mixed-content/META.yml b/testing/web-platform/tests/mixed-content/META.yml
new file mode 100644
index 0000000000..a2889eb6c7
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/META.yml
@@ -0,0 +1,3 @@
+spec: https://w3c.github.io/webappsec-mixed-content/
+suggested_reviewers:
+  - andypaicu
diff --git a/testing/web-platform/tests/mixed-content/README.md b/testing/web-platform/tests/mixed-content/README.md
new file mode 100644
index 0000000000..488432d41e
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/README.md
@@ -0,0 +1,4 @@
+# Mixed Content Test Suite
+
+The subdirectory `gen/` is generated using the generator at `common/security-features`.
+See [common/security-features/README.md](../common/security-features/README.md) for how to generate tests.
diff --git a/testing/web-platform/tests/mixed-content/blob.https.sub.html b/testing/web-platform/tests/mixed-content/blob.https.sub.html
new file mode 100644
index 0000000000..4e4bba6e0c
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/blob.https.sub.html
@@ -0,0 +1,54 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>Mixed-Content: blob tests</title>
+    <meta charset="utf-8">
+    <meta name="description" content="Test a request to a blob: URL is mixed content if the blob's origin is not potentially trustworthy.">
+    <meta name="help" href="https://w3c.github.io/webappsec-mixed-content/#should-block-fetch">
+    <meta name="help" href="https://w3c.github.io/webappsec-secure-contexts/#potentially-trustworthy-url">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+  </head>
+  <body>
+    <script>
+      async function try_fetch_request(url) {
+          try {
+              const response = await fetch(url);
+              return response.ok;
+          } catch(e) {
+              return false;
+          }
+      }
+
+      function try_script_load(url) {
+          return new Promise(resolve => {
+              let script = document.createElement("script");
+              script.onload = () => resolve(true);
+              script.onerror = () => resolve(false);
+              script.src = url;
+              document.body.appendChild(script);
+          });
+      }
+
+      const popup_http = "http://{{domains[]}}:{{ports[http][0]}}/mixed-content/resources/blob-popup.html";
+      const popup_https = "https://{{domains[]}}:{{ports[https][0]}}/mixed-content/resources/blob-popup.html";
+      [popup_https, popup_http].forEach(popup_url => {
+          promise_test(t => {
+              return new Promise(resolve => {
+                  window.addEventListener("message", resolve, {once: true});
+                  window.open(popup_url);
+              }).then(async function(event) {
+                  let data = event.data;
+                  assert_equals(await try_fetch_request(data.js_blob_url),
+                                data.potentially_trustworthy,
+                                "Fetch request");
+                  assert_equals(await try_script_load(data.js_blob_url),
+                                data.potentially_trustworthy,
+                               "Script load");
+                  event.source.close();
+              });
+          });
+      });
+    </script>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/csp.https.window.js b/testing/web-platform/tests/mixed-content/csp.https.window.js
new file mode 100644
index 0000000000..5428fb4791
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/csp.https.window.js
@@ -0,0 +1,41 @@
+// META: script=/common/dispatcher/dispatcher.js
+// META: script=/common/get-host-info.sub.js
+// META: script=/common/utils.js
+
+promise_test((t) => {
+  const url = `${get_host_info().HTTP_ORIGIN}/common/text-plain.txt`;
+  const promise = fetch(url, { mode: "no-cors" });
+  return promise_rejects_js(t, TypeError, promise, "mixed content fetch");
+}, "Mixed content checks apply to fetches in sandboxed documents");
+
+promise_test(async (t) => {
+  const uuid = token();
+  const context = new RemoteContext(uuid);
+
+  const iframe = document.body.appendChild(document.createElement("iframe"));
+  iframe.src = remoteExecutorUrl(uuid, { protocol: "http:" });
+
+  const result = await Promise.race([
+      context.execute_script(() => "loaded"),
+      new Promise((resolve) => t.step_timeout(() => {
+        resolve("timed out");
+      }, 1000 /* ms */)),
+  ]);
+  assert_equals(result, "timed out");
+}, "Mixed content checks apply to iframes in sandboxed documents");
+
+
+promise_test(async (t) => {
+  const uuid = token();
+
+  const popup = window.open(remoteExecutorUrl(uuid, { protocol: "http:" }));
+
+  const context = new RemoteContext(uuid);
+  const result = await Promise.race([
+      context.execute_script(() => "loaded"),
+      new Promise((resolve) => t.step_timeout(() => {
+        resolve("timed out");
+      }, 1000 /* ms */)),
+  ]);
+  assert_equals(result, "timed out");
+}, "Mixed content checks apply to popups in sandboxed documents");
diff --git a/testing/web-platform/tests/mixed-content/csp.https.window.js.headers b/testing/web-platform/tests/mixed-content/csp.https.window.js.headers
new file mode 100644
index 0000000000..6b6605899c
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/csp.https.window.js.headers
@@ -0,0 +1 @@
+Content-Security-Policy: sandbox allow-scripts allow-popups;
diff --git a/testing/web-platform/tests/mixed-content/gen/sharedworker-classic-data.http-rp/opt-in/fetch.https.html b/testing/web-platform/tests/mixed-content/gen/sharedworker-classic-data.http-rp/opt-in/fetch.https.html
new file mode 100644
index 0000000000..040c611834
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/sharedworker-classic-data.http-rp/opt-in/fetch.https.html
@@ -0,0 +1,172 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for fetch to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for fetch to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-https origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-https origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/sharedworker-classic-data.http-rp/opt-in/fetch.https.html.headers b/testing/web-platform/tests/mixed-content/gen/sharedworker-classic-data.http-rp/opt-in/fetch.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/sharedworker-classic-data.http-rp/opt-in/fetch.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/sharedworker-classic-data.http-rp/opt-in/websocket.https.html b/testing/web-platform/tests/mixed-content/gen/sharedworker-classic-data.http-rp/opt-in/websocket.https.html
new file mode 100644
index 0000000000..3103c00962
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/sharedworker-classic-data.http-rp/opt-in/websocket.https.html
@@ -0,0 +1,67 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-wss",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for websocket to same-wss origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-ws",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for websocket to cross-ws origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-ws",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for websocket to same-ws origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/sharedworker-classic-data.http-rp/opt-in/websocket.https.html.headers b/testing/web-platform/tests/mixed-content/gen/sharedworker-classic-data.http-rp/opt-in/websocket.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/sharedworker-classic-data.http-rp/opt-in/websocket.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/sharedworker-classic-data.http-rp/opt-in/xhr.https.html b/testing/web-platform/tests/mixed-content/gen/sharedworker-classic-data.http-rp/opt-in/xhr.https.html
new file mode 100644
index 0000000000..d5c5d86fec
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/sharedworker-classic-data.http-rp/opt-in/xhr.https.html
@@ -0,0 +1,172 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for xhr to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for xhr to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-https origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-https origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/sharedworker-classic-data.http-rp/opt-in/xhr.https.html.headers b/testing/web-platform/tests/mixed-content/gen/sharedworker-classic-data.http-rp/opt-in/xhr.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/sharedworker-classic-data.http-rp/opt-in/xhr.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/sharedworker-classic-data.meta/opt-in/fetch.https.html b/testing/web-platform/tests/mixed-content/gen/sharedworker-classic-data.meta/opt-in/fetch.https.html
new file mode 100644
index 0000000000..e9953505ea
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/sharedworker-classic-data.meta/opt-in/fetch.https.html
@@ -0,0 +1,68 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for fetch to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/sharedworker-classic-data.meta/opt-in/websocket.https.html b/testing/web-platform/tests/mixed-content/gen/sharedworker-classic-data.meta/opt-in/websocket.https.html
new file mode 100644
index 0000000000..cf0d0afaf0
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/sharedworker-classic-data.meta/opt-in/websocket.https.html
@@ -0,0 +1,68 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-wss",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for websocket to same-wss origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-ws",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for websocket to cross-ws origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-ws",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for websocket to same-ws origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/sharedworker-classic-data.meta/opt-in/xhr.https.html b/testing/web-platform/tests/mixed-content/gen/sharedworker-classic-data.meta/opt-in/xhr.https.html
new file mode 100644
index 0000000000..930816e391
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/sharedworker-classic-data.meta/opt-in/xhr.https.html
@@ -0,0 +1,68 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for xhr to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/sharedworker-classic-data.meta/unset/fetch.https.html b/testing/web-platform/tests/mixed-content/gen/sharedworker-classic-data.meta/unset/fetch.https.html
new file mode 100644
index 0000000000..7c3009e4b9
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/sharedworker-classic-data.meta/unset/fetch.https.html
@@ -0,0 +1,142 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for fetch to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for fetch to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/sharedworker-classic-data.meta/unset/websocket.https.html b/testing/web-platform/tests/mixed-content/gen/sharedworker-classic-data.meta/unset/websocket.https.html
new file mode 100644
index 0000000000..3103c00962
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/sharedworker-classic-data.meta/unset/websocket.https.html
@@ -0,0 +1,67 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-wss",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for websocket to same-wss origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-ws",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for websocket to cross-ws origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-ws",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for websocket to same-ws origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/sharedworker-classic-data.meta/unset/xhr.https.html b/testing/web-platform/tests/mixed-content/gen/sharedworker-classic-data.meta/unset/xhr.https.html
new file mode 100644
index 0000000000..d67d3dfbc1
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/sharedworker-classic-data.meta/unset/xhr.https.html
@@ -0,0 +1,142 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for xhr to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for xhr to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/sharedworker-classic.http-rp/opt-in/fetch.https.html b/testing/web-platform/tests/mixed-content/gen/sharedworker-classic.http-rp/opt-in/fetch.https.html
new file mode 100644
index 0000000000..31550a1378
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/sharedworker-classic.http-rp/opt-in/fetch.https.html
@@ -0,0 +1,232 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "sharedworker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for fetch to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "sharedworker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for fetch to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "sharedworker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "sharedworker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "sharedworker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "sharedworker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-https origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "sharedworker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "sharedworker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "sharedworker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "sharedworker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-https origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/sharedworker-classic.http-rp/opt-in/websocket.https.html b/testing/web-platform/tests/mixed-content/gen/sharedworker-classic.http-rp/opt-in/websocket.https.html
new file mode 100644
index 0000000000..e259b1dcce
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/sharedworker-classic.http-rp/opt-in/websocket.https.html
@@ -0,0 +1,85 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-wss",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "sharedworker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for websocket to same-wss origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-ws",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "sharedworker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for websocket to cross-ws origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-ws",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "sharedworker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for websocket to same-ws origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/sharedworker-classic.http-rp/opt-in/xhr.https.html b/testing/web-platform/tests/mixed-content/gen/sharedworker-classic.http-rp/opt-in/xhr.https.html
new file mode 100644
index 0000000000..d14a58c118
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/sharedworker-classic.http-rp/opt-in/xhr.https.html
@@ -0,0 +1,232 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "sharedworker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for xhr to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "sharedworker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for xhr to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "sharedworker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "sharedworker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "sharedworker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "sharedworker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-https origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "sharedworker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "sharedworker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "sharedworker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "sharedworker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-https origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/sharedworker-classic.http-rp/unset/fetch.https.html b/testing/web-platform/tests/mixed-content/gen/sharedworker-classic.http-rp/unset/fetch.https.html
new file mode 100644
index 0000000000..41a7a328d7
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/sharedworker-classic.http-rp/unset/fetch.https.html
@@ -0,0 +1,142 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for fetch to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for fetch to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/sharedworker-classic.http-rp/unset/fetch.https.html.headers b/testing/web-platform/tests/mixed-content/gen/sharedworker-classic.http-rp/unset/fetch.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/sharedworker-classic.http-rp/unset/fetch.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/sharedworker-classic.http-rp/unset/websocket.https.html b/testing/web-platform/tests/mixed-content/gen/sharedworker-classic.http-rp/unset/websocket.https.html
new file mode 100644
index 0000000000..825f9b105c
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/sharedworker-classic.http-rp/unset/websocket.https.html
@@ -0,0 +1,67 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-wss",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for websocket to same-wss origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-ws",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for websocket to cross-ws origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-ws",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for websocket to same-ws origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/sharedworker-classic.http-rp/unset/websocket.https.html.headers b/testing/web-platform/tests/mixed-content/gen/sharedworker-classic.http-rp/unset/websocket.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/sharedworker-classic.http-rp/unset/websocket.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/sharedworker-classic.http-rp/unset/xhr.https.html b/testing/web-platform/tests/mixed-content/gen/sharedworker-classic.http-rp/unset/xhr.https.html
new file mode 100644
index 0000000000..f2590c6ecd
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/sharedworker-classic.http-rp/unset/xhr.https.html
@@ -0,0 +1,142 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for xhr to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for xhr to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/sharedworker-classic.http-rp/unset/xhr.https.html.headers b/testing/web-platform/tests/mixed-content/gen/sharedworker-classic.http-rp/unset/xhr.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/sharedworker-classic.http-rp/unset/xhr.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/sharedworker-module-data.http-rp/opt-in/fetch.https.html b/testing/web-platform/tests/mixed-content/gen/sharedworker-module-data.http-rp/opt-in/fetch.https.html
new file mode 100644
index 0000000000..928365fd34
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/sharedworker-module-data.http-rp/opt-in/fetch.https.html
@@ -0,0 +1,172 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for fetch to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for fetch to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-https origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-https origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/sharedworker-module-data.http-rp/opt-in/fetch.https.html.headers b/testing/web-platform/tests/mixed-content/gen/sharedworker-module-data.http-rp/opt-in/fetch.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/sharedworker-module-data.http-rp/opt-in/fetch.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/sharedworker-module-data.http-rp/opt-in/websocket.https.html b/testing/web-platform/tests/mixed-content/gen/sharedworker-module-data.http-rp/opt-in/websocket.https.html
new file mode 100644
index 0000000000..d04a361ee8
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/sharedworker-module-data.http-rp/opt-in/websocket.https.html
@@ -0,0 +1,67 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-wss",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for websocket to same-wss origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-ws",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for websocket to cross-ws origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-ws",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for websocket to same-ws origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/sharedworker-module-data.http-rp/opt-in/websocket.https.html.headers b/testing/web-platform/tests/mixed-content/gen/sharedworker-module-data.http-rp/opt-in/websocket.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/sharedworker-module-data.http-rp/opt-in/websocket.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/sharedworker-module-data.http-rp/opt-in/xhr.https.html b/testing/web-platform/tests/mixed-content/gen/sharedworker-module-data.http-rp/opt-in/xhr.https.html
new file mode 100644
index 0000000000..6c5090f2c4
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/sharedworker-module-data.http-rp/opt-in/xhr.https.html
@@ -0,0 +1,172 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for xhr to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for xhr to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-https origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-https origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/sharedworker-module-data.http-rp/opt-in/xhr.https.html.headers b/testing/web-platform/tests/mixed-content/gen/sharedworker-module-data.http-rp/opt-in/xhr.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/sharedworker-module-data.http-rp/opt-in/xhr.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/sharedworker-module-data.meta/opt-in/fetch.https.html b/testing/web-platform/tests/mixed-content/gen/sharedworker-module-data.meta/opt-in/fetch.https.html
new file mode 100644
index 0000000000..037f931626
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/sharedworker-module-data.meta/opt-in/fetch.https.html
@@ -0,0 +1,68 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for fetch to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/sharedworker-module-data.meta/opt-in/websocket.https.html b/testing/web-platform/tests/mixed-content/gen/sharedworker-module-data.meta/opt-in/websocket.https.html
new file mode 100644
index 0000000000..2fbfc48915
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/sharedworker-module-data.meta/opt-in/websocket.https.html
@@ -0,0 +1,68 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-wss",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for websocket to same-wss origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-ws",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for websocket to cross-ws origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-ws",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for websocket to same-ws origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/sharedworker-module-data.meta/opt-in/xhr.https.html b/testing/web-platform/tests/mixed-content/gen/sharedworker-module-data.meta/opt-in/xhr.https.html
new file mode 100644
index 0000000000..853bc1270b
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/sharedworker-module-data.meta/opt-in/xhr.https.html
@@ -0,0 +1,68 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for xhr to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/sharedworker-module-data.meta/unset/fetch.https.html b/testing/web-platform/tests/mixed-content/gen/sharedworker-module-data.meta/unset/fetch.https.html
new file mode 100644
index 0000000000..14c3103fe5
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/sharedworker-module-data.meta/unset/fetch.https.html
@@ -0,0 +1,142 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for fetch to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for fetch to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/sharedworker-module-data.meta/unset/websocket.https.html b/testing/web-platform/tests/mixed-content/gen/sharedworker-module-data.meta/unset/websocket.https.html
new file mode 100644
index 0000000000..d04a361ee8
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/sharedworker-module-data.meta/unset/websocket.https.html
@@ -0,0 +1,67 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-wss",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for websocket to same-wss origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-ws",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for websocket to cross-ws origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-ws",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for websocket to same-ws origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/sharedworker-module-data.meta/unset/xhr.https.html b/testing/web-platform/tests/mixed-content/gen/sharedworker-module-data.meta/unset/xhr.https.html
new file mode 100644
index 0000000000..68e2a490cc
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/sharedworker-module-data.meta/unset/xhr.https.html
@@ -0,0 +1,142 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for xhr to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for xhr to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/sharedworker-module.http-rp/opt-in/fetch.https.html b/testing/web-platform/tests/mixed-content/gen/sharedworker-module.http-rp/opt-in/fetch.https.html
new file mode 100644
index 0000000000..2a13933ff9
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/sharedworker-module.http-rp/opt-in/fetch.https.html
@@ -0,0 +1,232 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "sharedworker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for fetch to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "sharedworker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for fetch to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "sharedworker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "sharedworker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "sharedworker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "sharedworker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-https origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "sharedworker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "sharedworker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "sharedworker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "sharedworker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-https origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/sharedworker-module.http-rp/opt-in/websocket.https.html b/testing/web-platform/tests/mixed-content/gen/sharedworker-module.http-rp/opt-in/websocket.https.html
new file mode 100644
index 0000000000..3486ab3889
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/sharedworker-module.http-rp/opt-in/websocket.https.html
@@ -0,0 +1,85 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-wss",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "sharedworker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for websocket to same-wss origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-ws",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "sharedworker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for websocket to cross-ws origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-ws",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "sharedworker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for websocket to same-ws origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/sharedworker-module.http-rp/opt-in/xhr.https.html b/testing/web-platform/tests/mixed-content/gen/sharedworker-module.http-rp/opt-in/xhr.https.html
new file mode 100644
index 0000000000..bd9395bdbb
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/sharedworker-module.http-rp/opt-in/xhr.https.html
@@ -0,0 +1,232 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "sharedworker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for xhr to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "sharedworker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for xhr to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "sharedworker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "sharedworker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "sharedworker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "sharedworker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-https origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "sharedworker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "sharedworker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "sharedworker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "sharedworker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-https origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/sharedworker-module.http-rp/unset/fetch.https.html b/testing/web-platform/tests/mixed-content/gen/sharedworker-module.http-rp/unset/fetch.https.html
new file mode 100644
index 0000000000..8f31ab2d19
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/sharedworker-module.http-rp/unset/fetch.https.html
@@ -0,0 +1,142 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for fetch to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for fetch to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/sharedworker-module.http-rp/unset/fetch.https.html.headers b/testing/web-platform/tests/mixed-content/gen/sharedworker-module.http-rp/unset/fetch.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/sharedworker-module.http-rp/unset/fetch.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/sharedworker-module.http-rp/unset/websocket.https.html b/testing/web-platform/tests/mixed-content/gen/sharedworker-module.http-rp/unset/websocket.https.html
new file mode 100644
index 0000000000..5eb627c7cf
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/sharedworker-module.http-rp/unset/websocket.https.html
@@ -0,0 +1,67 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-wss",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for websocket to same-wss origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-ws",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for websocket to cross-ws origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-ws",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for websocket to same-ws origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/sharedworker-module.http-rp/unset/websocket.https.html.headers b/testing/web-platform/tests/mixed-content/gen/sharedworker-module.http-rp/unset/websocket.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/sharedworker-module.http-rp/unset/websocket.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/sharedworker-module.http-rp/unset/xhr.https.html b/testing/web-platform/tests/mixed-content/gen/sharedworker-module.http-rp/unset/xhr.https.html
new file mode 100644
index 0000000000..2ebeed08a0
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/sharedworker-module.http-rp/unset/xhr.https.html
@@ -0,0 +1,142 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for xhr to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for xhr to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "sharedworker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/sharedworker-module.http-rp/unset/xhr.https.html.headers b/testing/web-platform/tests/mixed-content/gen/sharedworker-module.http-rp/unset/xhr.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/sharedworker-module.http-rp/unset/xhr.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/audio-tag.https.html b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/audio-tag.https.html
new file mode 100644
index 0000000000..599f8eb9b5
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/audio-tag.https.html
@@ -0,0 +1,122 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "audio-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for audio-tag to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "audio-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for audio-tag to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "audio-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for audio-tag to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "audio-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for audio-tag to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "audio-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for audio-tag to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "audio-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for audio-tag to cross-https origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "audio-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for audio-tag to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "audio-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for audio-tag to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "audio-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for audio-tag to same-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "audio-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for audio-tag to same-https origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/audio-tag.https.html.headers b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/audio-tag.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/audio-tag.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/beacon.https.html b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/beacon.https.html
new file mode 100644
index 0000000000..b09f6332dd
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/beacon.https.html
@@ -0,0 +1,122 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "beacon",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for beacon to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "beacon",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for beacon to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "beacon",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for beacon to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "beacon",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for beacon to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "beacon",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for beacon to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "beacon",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for beacon to cross-https origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "beacon",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for beacon to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "beacon",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for beacon to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "beacon",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for beacon to same-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "beacon",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for beacon to same-https origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/beacon.https.html.headers b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/beacon.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/beacon.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/fetch.https.html b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/fetch.https.html
new file mode 100644
index 0000000000..508a9d2bd7
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/fetch.https.html
@@ -0,0 +1,122 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for fetch to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for fetch to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-https origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-https origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/fetch.https.html.headers b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/fetch.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/fetch.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/img-tag.https.html b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/img-tag.https.html
new file mode 100644
index 0000000000..eda0043651
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/img-tag.https.html
@@ -0,0 +1,122 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "img-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for img-tag to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "img-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for img-tag to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "img-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for img-tag to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "img-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for img-tag to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "img-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for img-tag to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "img-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for img-tag to cross-https origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "img-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for img-tag to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "img-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for img-tag to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "img-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for img-tag to same-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "img-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for img-tag to same-https origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/img-tag.https.html.headers b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/img-tag.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/img-tag.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/link-css-tag.https.html b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/link-css-tag.https.html
new file mode 100644
index 0000000000..237ec0ca78
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/link-css-tag.https.html
@@ -0,0 +1,122 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "link-css-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for link-css-tag to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "link-css-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for link-css-tag to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "link-css-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for link-css-tag to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "link-css-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for link-css-tag to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "link-css-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for link-css-tag to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "link-css-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for link-css-tag to cross-https origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "link-css-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for link-css-tag to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "link-css-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for link-css-tag to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "link-css-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for link-css-tag to same-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "link-css-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for link-css-tag to same-https origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/link-css-tag.https.html.headers b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/link-css-tag.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/link-css-tag.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/link-prefetch-tag.https.html b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/link-prefetch-tag.https.html
new file mode 100644
index 0000000000..0efd1429a7
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/link-prefetch-tag.https.html
@@ -0,0 +1,122 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "link-prefetch-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for link-prefetch-tag to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "link-prefetch-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for link-prefetch-tag to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "link-prefetch-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for link-prefetch-tag to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "link-prefetch-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for link-prefetch-tag to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "link-prefetch-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for link-prefetch-tag to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "link-prefetch-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for link-prefetch-tag to cross-https origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "link-prefetch-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for link-prefetch-tag to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "link-prefetch-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for link-prefetch-tag to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "link-prefetch-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for link-prefetch-tag to same-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "link-prefetch-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for link-prefetch-tag to same-https origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/link-prefetch-tag.https.html.headers b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/link-prefetch-tag.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/link-prefetch-tag.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/object-tag.https.html b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/object-tag.https.html
new file mode 100644
index 0000000000..6bc8f75f65
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/object-tag.https.html
@@ -0,0 +1,122 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "object-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for object-tag to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "object-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for object-tag to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "object-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for object-tag to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "object-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for object-tag to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "object-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for object-tag to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "object-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for object-tag to cross-https origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "object-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for object-tag to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "object-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for object-tag to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "object-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for object-tag to same-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "object-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for object-tag to same-https origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/object-tag.https.html.headers b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/object-tag.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/object-tag.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/picture-tag.https.html b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/picture-tag.https.html
new file mode 100644
index 0000000000..088c6c410a
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/picture-tag.https.html
@@ -0,0 +1,122 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "picture-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for picture-tag to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "picture-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for picture-tag to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "picture-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for picture-tag to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "picture-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for picture-tag to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "picture-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for picture-tag to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "picture-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for picture-tag to cross-https origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "picture-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for picture-tag to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "picture-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for picture-tag to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "picture-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for picture-tag to same-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "picture-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for picture-tag to same-https origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/picture-tag.https.html.headers b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/picture-tag.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/picture-tag.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/script-tag-dynamic-import.https.html b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/script-tag-dynamic-import.https.html
new file mode 100644
index 0000000000..0ce2794c56
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/script-tag-dynamic-import.https.html
@@ -0,0 +1,42 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "script-tag-dynamic-import",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for script-tag-dynamic-import to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "script-tag-dynamic-import",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for script-tag-dynamic-import to same-https origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/script-tag-dynamic-import.https.html.headers b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/script-tag-dynamic-import.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/script-tag-dynamic-import.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/script-tag.https.html b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/script-tag.https.html
new file mode 100644
index 0000000000..d806e9c0bc
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/script-tag.https.html
@@ -0,0 +1,122 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "script-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for script-tag to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "script-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for script-tag to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "script-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for script-tag to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "script-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for script-tag to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "script-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for script-tag to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "script-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for script-tag to cross-https origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "script-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for script-tag to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "script-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for script-tag to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "script-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for script-tag to same-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "script-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for script-tag to same-https origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/script-tag.https.html.headers b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/script-tag.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/script-tag.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/sharedworker-classic.https.html b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/sharedworker-classic.https.html
new file mode 100644
index 0000000000..896c0297d5
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/sharedworker-classic.https.html
@@ -0,0 +1,62 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-classic",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for sharedworker-classic to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-classic",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for sharedworker-classic to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-classic",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for sharedworker-classic to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-classic",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for sharedworker-classic to same-http origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/sharedworker-classic.https.html.headers b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/sharedworker-classic.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/sharedworker-classic.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/sharedworker-import-data.https.html b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/sharedworker-import-data.https.html
new file mode 100644
index 0000000000..2784b2bf13
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/sharedworker-import-data.https.html
@@ -0,0 +1,122 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for sharedworker-import-data to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for sharedworker-import-data to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for sharedworker-import-data to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for sharedworker-import-data to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for sharedworker-import-data to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for sharedworker-import-data to cross-https origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for sharedworker-import-data to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for sharedworker-import-data to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for sharedworker-import-data to same-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for sharedworker-import-data to same-https origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/sharedworker-import-data.https.html.headers b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/sharedworker-import-data.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/sharedworker-import-data.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/sharedworker-import.https.html b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/sharedworker-import.https.html
new file mode 100644
index 0000000000..0644d1f03e
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/sharedworker-import.https.html
@@ -0,0 +1,122 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-import",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for sharedworker-import to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-import",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for sharedworker-import to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-import",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for sharedworker-import to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-import",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for sharedworker-import to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-import",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for sharedworker-import to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-import",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for sharedworker-import to cross-https origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-import",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for sharedworker-import to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-import",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for sharedworker-import to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-import",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for sharedworker-import to same-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-import",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for sharedworker-import to same-https origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/sharedworker-import.https.html.headers b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/sharedworker-import.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/sharedworker-import.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/sharedworker-module.https.html b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/sharedworker-module.https.html
new file mode 100644
index 0000000000..1a371ce028
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/sharedworker-module.https.html
@@ -0,0 +1,62 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-module",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for sharedworker-module to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-module",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for sharedworker-module to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-module",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for sharedworker-module to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-module",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for sharedworker-module to same-http origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/sharedworker-module.https.html.headers b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/sharedworker-module.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/sharedworker-module.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/video-tag.https.html b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/video-tag.https.html
new file mode 100644
index 0000000000..ff176ab6d1
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/video-tag.https.html
@@ -0,0 +1,122 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "video-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for video-tag to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "video-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for video-tag to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "video-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for video-tag to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "video-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for video-tag to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "video-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for video-tag to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "video-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for video-tag to cross-https origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "video-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for video-tag to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "video-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for video-tag to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "video-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for video-tag to same-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "video-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for video-tag to same-https origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/video-tag.https.html.headers b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/video-tag.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/video-tag.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/websocket.https.html b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/websocket.https.html
new file mode 100644
index 0000000000..49b80c448f
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/websocket.https.html
@@ -0,0 +1,52 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-wss",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for websocket to same-wss origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-ws",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for websocket to cross-ws origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-ws",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for websocket to same-ws origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/websocket.https.html.headers b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/websocket.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/websocket.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worker-classic.https.html b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worker-classic.https.html
new file mode 100644
index 0000000000..2717be37cc
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worker-classic.https.html
@@ -0,0 +1,62 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-classic",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worker-classic to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-classic",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worker-classic to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-classic",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-classic to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-classic",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-classic to same-http origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worker-classic.https.html.headers b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worker-classic.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worker-classic.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worker-import-data.https.html b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worker-import-data.https.html
new file mode 100644
index 0000000000..a44eee0468
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worker-import-data.https.html
@@ -0,0 +1,122 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worker-import-data to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worker-import-data to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-import-data to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-import-data to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-import-data to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-import-data to cross-https origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-import-data to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-import-data to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-import-data to same-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-import-data to same-https origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worker-import-data.https.html.headers b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worker-import-data.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worker-import-data.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worker-import.https.html b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worker-import.https.html
new file mode 100644
index 0000000000..5499322818
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worker-import.https.html
@@ -0,0 +1,122 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-import",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worker-import to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-import",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worker-import to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-import",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-import to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-import",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-import to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-import",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-import to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-import",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-import to cross-https origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-import",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-import to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-import",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-import to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-import",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-import to same-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-import",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-import to same-https origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worker-import.https.html.headers b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worker-import.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worker-import.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worker-module.https.html b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worker-module.https.html
new file mode 100644
index 0000000000..6cf33d54f5
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worker-module.https.html
@@ -0,0 +1,62 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-module",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worker-module to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-module",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worker-module to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-module",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-module to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-module",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-module to same-http origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worker-module.https.html.headers b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worker-module.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worker-module.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worklet-animation-import-data.https.html b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worklet-animation-import-data.https.html
new file mode 100644
index 0000000000..165cbf6d14
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worklet-animation-import-data.https.html
@@ -0,0 +1,122 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-animation-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worklet-animation-import-data to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-animation-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worklet-animation-import-data to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-animation-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-animation-import-data to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-animation-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-animation-import-data to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-animation-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-animation-import-data to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-animation-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-animation-import-data to cross-https origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-animation-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-animation-import-data to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-animation-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-animation-import-data to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-animation-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-animation-import-data to same-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-animation-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-animation-import-data to same-https origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worklet-animation-import-data.https.html.headers b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worklet-animation-import-data.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worklet-animation-import-data.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worklet-animation.https.html b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worklet-animation.https.html
new file mode 100644
index 0000000000..67926809f2
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worklet-animation.https.html
@@ -0,0 +1,122 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-animation",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worklet-animation to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-animation",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worklet-animation to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-animation",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-animation to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-animation",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-animation to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-animation",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-animation to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-animation",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-animation to cross-https origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-animation",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-animation to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-animation",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-animation to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-animation",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-animation to same-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-animation",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-animation to same-https origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worklet-animation.https.html.headers b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worklet-animation.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worklet-animation.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worklet-audio-import-data.https.html b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worklet-audio-import-data.https.html
new file mode 100644
index 0000000000..72ebea2ff2
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worklet-audio-import-data.https.html
@@ -0,0 +1,122 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-audio-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worklet-audio-import-data to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-audio-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worklet-audio-import-data to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-audio-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-audio-import-data to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-audio-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-audio-import-data to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-audio-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-audio-import-data to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-audio-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-audio-import-data to cross-https origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-audio-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-audio-import-data to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-audio-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-audio-import-data to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-audio-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-audio-import-data to same-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-audio-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-audio-import-data to same-https origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worklet-audio-import-data.https.html.headers b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worklet-audio-import-data.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worklet-audio-import-data.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worklet-audio.https.html b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worklet-audio.https.html
new file mode 100644
index 0000000000..3c31d0d998
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worklet-audio.https.html
@@ -0,0 +1,122 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-audio",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worklet-audio to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-audio",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worklet-audio to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-audio",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-audio to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-audio",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-audio to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-audio",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-audio to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-audio",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-audio to cross-https origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-audio",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-audio to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-audio",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-audio to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-audio",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-audio to same-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-audio",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-audio to same-https origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worklet-audio.https.html.headers b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worklet-audio.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worklet-audio.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worklet-layout-import-data.https.html b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worklet-layout-import-data.https.html
new file mode 100644
index 0000000000..ae84f3d1ef
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worklet-layout-import-data.https.html
@@ -0,0 +1,122 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-layout-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worklet-layout-import-data to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-layout-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worklet-layout-import-data to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-layout-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-layout-import-data to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-layout-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-layout-import-data to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-layout-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-layout-import-data to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-layout-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-layout-import-data to cross-https origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-layout-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-layout-import-data to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-layout-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-layout-import-data to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-layout-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-layout-import-data to same-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-layout-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-layout-import-data to same-https origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worklet-layout-import-data.https.html.headers b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worklet-layout-import-data.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worklet-layout-import-data.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worklet-layout.https.html b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worklet-layout.https.html
new file mode 100644
index 0000000000..8a39e2d9d3
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worklet-layout.https.html
@@ -0,0 +1,122 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-layout",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worklet-layout to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-layout",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worklet-layout to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-layout",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-layout to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-layout",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-layout to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-layout",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-layout to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-layout",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-layout to cross-https origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-layout",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-layout to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-layout",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-layout to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-layout",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-layout to same-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-layout",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-layout to same-https origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worklet-layout.https.html.headers b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worklet-layout.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worklet-layout.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worklet-paint-import-data.https.html b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worklet-paint-import-data.https.html
new file mode 100644
index 0000000000..918051440e
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worklet-paint-import-data.https.html
@@ -0,0 +1,122 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-paint-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worklet-paint-import-data to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-paint-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worklet-paint-import-data to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-paint-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-paint-import-data to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-paint-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-paint-import-data to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-paint-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-paint-import-data to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-paint-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-paint-import-data to cross-https origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-paint-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-paint-import-data to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-paint-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-paint-import-data to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-paint-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-paint-import-data to same-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-paint-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-paint-import-data to same-https origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worklet-paint-import-data.https.html.headers b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worklet-paint-import-data.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worklet-paint-import-data.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worklet-paint.https.html b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worklet-paint.https.html
new file mode 100644
index 0000000000..c270a2b70a
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worklet-paint.https.html
@@ -0,0 +1,122 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-paint",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worklet-paint to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-paint",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worklet-paint to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-paint",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-paint to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-paint",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-paint to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-paint",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-paint to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-paint",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-paint to cross-https origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-paint",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-paint to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-paint",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-paint to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-paint",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-paint to same-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-paint",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-paint to same-https origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worklet-paint.https.html.headers b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worklet-paint.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/worklet-paint.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/xhr.https.html b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/xhr.https.html
new file mode 100644
index 0000000000..22f4aa06b5
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/xhr.https.html
@@ -0,0 +1,122 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for xhr to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for xhr to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-https origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-https origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/xhr.https.html.headers b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/xhr.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.http-rp/opt-in/xhr.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/audio-tag.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/audio-tag.https.html
new file mode 100644
index 0000000000..9734cef5c5
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/audio-tag.https.html
@@ -0,0 +1,53 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "audio-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for audio-tag to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "audio-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for audio-tag to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "audio-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for audio-tag to same-http origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/beacon.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/beacon.https.html
new file mode 100644
index 0000000000..87442befd3
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/beacon.https.html
@@ -0,0 +1,53 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "beacon",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for beacon to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "beacon",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for beacon to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "beacon",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for beacon to same-http origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/fetch.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/fetch.https.html
new file mode 100644
index 0000000000..45378cae4a
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/fetch.https.html
@@ -0,0 +1,53 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for fetch to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/img-tag.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/img-tag.https.html
new file mode 100644
index 0000000000..8c2486d9a7
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/img-tag.https.html
@@ -0,0 +1,53 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "img-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for img-tag to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "img-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for img-tag to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "img-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for img-tag to same-http origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/link-css-tag.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/link-css-tag.https.html
new file mode 100644
index 0000000000..2014c10e23
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/link-css-tag.https.html
@@ -0,0 +1,53 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "link-css-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for link-css-tag to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "link-css-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for link-css-tag to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "link-css-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for link-css-tag to same-http origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/link-prefetch-tag.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/link-prefetch-tag.https.html
new file mode 100644
index 0000000000..456139afda
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/link-prefetch-tag.https.html
@@ -0,0 +1,53 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "link-prefetch-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for link-prefetch-tag to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "link-prefetch-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for link-prefetch-tag to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "link-prefetch-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for link-prefetch-tag to same-http origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/object-tag.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/object-tag.https.html
new file mode 100644
index 0000000000..209927d53f
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/object-tag.https.html
@@ -0,0 +1,53 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "object-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for object-tag to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "object-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for object-tag to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "object-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for object-tag to same-http origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/picture-tag.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/picture-tag.https.html
new file mode 100644
index 0000000000..d28777b8cb
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/picture-tag.https.html
@@ -0,0 +1,53 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "picture-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for picture-tag to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "picture-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for picture-tag to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "picture-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for picture-tag to same-http origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/script-tag-dynamic-import.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/script-tag-dynamic-import.https.html
new file mode 100644
index 0000000000..b2794bd20a
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/script-tag-dynamic-import.https.html
@@ -0,0 +1,33 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "script-tag-dynamic-import",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for script-tag-dynamic-import to same-https origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/script-tag.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/script-tag.https.html
new file mode 100644
index 0000000000..55e2dadb06
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/script-tag.https.html
@@ -0,0 +1,53 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "script-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for script-tag to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "script-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for script-tag to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "script-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for script-tag to same-http origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/sharedworker-classic.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/sharedworker-classic.https.html
new file mode 100644
index 0000000000..02c50e3bcb
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/sharedworker-classic.https.html
@@ -0,0 +1,43 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-classic",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for sharedworker-classic to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-classic",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for sharedworker-classic to same-http origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/sharedworker-import-data.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/sharedworker-import-data.https.html
new file mode 100644
index 0000000000..d906686d92
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/sharedworker-import-data.https.html
@@ -0,0 +1,53 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for sharedworker-import-data to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for sharedworker-import-data to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for sharedworker-import-data to same-http origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/sharedworker-import.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/sharedworker-import.https.html
new file mode 100644
index 0000000000..3b156c6409
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/sharedworker-import.https.html
@@ -0,0 +1,53 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-import",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for sharedworker-import to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-import",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for sharedworker-import to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-import",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for sharedworker-import to same-http origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/sharedworker-module.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/sharedworker-module.https.html
new file mode 100644
index 0000000000..2ebb231931
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/sharedworker-module.https.html
@@ -0,0 +1,43 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-module",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for sharedworker-module to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-module",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for sharedworker-module to same-http origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/video-tag.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/video-tag.https.html
new file mode 100644
index 0000000000..6b40dfc2e6
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/video-tag.https.html
@@ -0,0 +1,53 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "video-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for video-tag to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "video-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for video-tag to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "video-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for video-tag to same-http origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/websocket.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/websocket.https.html
new file mode 100644
index 0000000000..b54656dbe7
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/websocket.https.html
@@ -0,0 +1,53 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-wss",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for websocket to same-wss origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-ws",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for websocket to cross-ws origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-ws",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for websocket to same-ws origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/worker-classic.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/worker-classic.https.html
new file mode 100644
index 0000000000..ca7667ceef
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/worker-classic.https.html
@@ -0,0 +1,43 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-classic",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worker-classic to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-classic",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-classic to same-http origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/worker-import-data.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/worker-import-data.https.html
new file mode 100644
index 0000000000..2ff9aa7cf2
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/worker-import-data.https.html
@@ -0,0 +1,53 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worker-import-data to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-import-data to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-import-data to same-http origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/worker-import.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/worker-import.https.html
new file mode 100644
index 0000000000..50db49acc8
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/worker-import.https.html
@@ -0,0 +1,53 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-import",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worker-import to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-import",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-import to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-import",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-import to same-http origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/worker-module.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/worker-module.https.html
new file mode 100644
index 0000000000..2f1c240cae
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/worker-module.https.html
@@ -0,0 +1,43 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-module",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worker-module to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-module",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-module to same-http origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/worklet-animation-import-data.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/worklet-animation-import-data.https.html
new file mode 100644
index 0000000000..0ebc71607f
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/worklet-animation-import-data.https.html
@@ -0,0 +1,53 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-animation-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worklet-animation-import-data to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-animation-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-animation-import-data to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-animation-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-animation-import-data to same-http origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/worklet-animation.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/worklet-animation.https.html
new file mode 100644
index 0000000000..b3b070b60b
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/worklet-animation.https.html
@@ -0,0 +1,53 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-animation",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worklet-animation to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-animation",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-animation to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-animation",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-animation to same-http origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/worklet-audio-import-data.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/worklet-audio-import-data.https.html
new file mode 100644
index 0000000000..383e08f0d9
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/worklet-audio-import-data.https.html
@@ -0,0 +1,53 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-audio-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worklet-audio-import-data to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-audio-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-audio-import-data to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-audio-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-audio-import-data to same-http origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/worklet-audio.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/worklet-audio.https.html
new file mode 100644
index 0000000000..c4caffa7c5
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/worklet-audio.https.html
@@ -0,0 +1,53 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-audio",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worklet-audio to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-audio",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-audio to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-audio",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-audio to same-http origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/worklet-layout-import-data.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/worklet-layout-import-data.https.html
new file mode 100644
index 0000000000..b90abff512
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/worklet-layout-import-data.https.html
@@ -0,0 +1,53 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-layout-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worklet-layout-import-data to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-layout-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-layout-import-data to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-layout-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-layout-import-data to same-http origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/worklet-layout.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/worklet-layout.https.html
new file mode 100644
index 0000000000..08f5bcc66e
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/worklet-layout.https.html
@@ -0,0 +1,53 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-layout",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worklet-layout to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-layout",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-layout to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-layout",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-layout to same-http origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/worklet-paint-import-data.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/worklet-paint-import-data.https.html
new file mode 100644
index 0000000000..04176e561d
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/worklet-paint-import-data.https.html
@@ -0,0 +1,53 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-paint-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worklet-paint-import-data to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-paint-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-paint-import-data to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-paint-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-paint-import-data to same-http origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/worklet-paint.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/worklet-paint.https.html
new file mode 100644
index 0000000000..8c58fc638f
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/worklet-paint.https.html
@@ -0,0 +1,53 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-paint",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worklet-paint to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-paint",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-paint to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-paint",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-paint to same-http origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/xhr.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/xhr.https.html
new file mode 100644
index 0000000000..22cbcd7ed0
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/opt-in/xhr.https.html
@@ -0,0 +1,53 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for xhr to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/unset/audio-tag.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/audio-tag.https.html
new file mode 100644
index 0000000000..75c9b75355
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/audio-tag.https.html
@@ -0,0 +1,102 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "audio-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for audio-tag to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "audio-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for audio-tag to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "audio-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for audio-tag to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "audio-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for audio-tag to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "audio-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for audio-tag to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "audio-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for audio-tag to same-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "audio-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for audio-tag to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "audio-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for audio-tag to same-https origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/unset/beacon.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/beacon.https.html
new file mode 100644
index 0000000000..ae29a64f41
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/beacon.https.html
@@ -0,0 +1,102 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "beacon",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for beacon to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "beacon",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for beacon to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "beacon",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for beacon to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "beacon",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for beacon to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "beacon",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for beacon to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "beacon",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for beacon to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "beacon",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for beacon to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "beacon",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for beacon to same-http origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/unset/fetch.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/fetch.https.html
new file mode 100644
index 0000000000..1250aec2a8
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/fetch.https.html
@@ -0,0 +1,102 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for fetch to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for fetch to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/unset/img-tag.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/img-tag.https.html
new file mode 100644
index 0000000000..c02bf8b69c
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/img-tag.https.html
@@ -0,0 +1,102 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "img-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for img-tag to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "img-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for img-tag to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "img-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for img-tag to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "img-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for img-tag to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "img-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for img-tag to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "img-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for img-tag to same-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "img-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for img-tag to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "img-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for img-tag to same-https origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/unset/link-css-tag.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/link-css-tag.https.html
new file mode 100644
index 0000000000..559e0223c0
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/link-css-tag.https.html
@@ -0,0 +1,102 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "link-css-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for link-css-tag to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "link-css-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for link-css-tag to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "link-css-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for link-css-tag to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "link-css-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for link-css-tag to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "link-css-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for link-css-tag to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "link-css-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for link-css-tag to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "link-css-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for link-css-tag to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "link-css-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for link-css-tag to same-http origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/unset/link-prefetch-tag.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/link-prefetch-tag.https.html
new file mode 100644
index 0000000000..5a0364121e
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/link-prefetch-tag.https.html
@@ -0,0 +1,102 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "link-prefetch-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for link-prefetch-tag to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "link-prefetch-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for link-prefetch-tag to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "link-prefetch-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for link-prefetch-tag to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "link-prefetch-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for link-prefetch-tag to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "link-prefetch-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for link-prefetch-tag to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "link-prefetch-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for link-prefetch-tag to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "link-prefetch-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for link-prefetch-tag to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "link-prefetch-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for link-prefetch-tag to same-http origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/unset/object-tag.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/object-tag.https.html
new file mode 100644
index 0000000000..e22e783950
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/object-tag.https.html
@@ -0,0 +1,102 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "object-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for object-tag to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "object-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for object-tag to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "object-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for object-tag to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "object-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for object-tag to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "object-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for object-tag to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "object-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for object-tag to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "object-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for object-tag to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "object-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for object-tag to same-http origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/unset/picture-tag.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/picture-tag.https.html
new file mode 100644
index 0000000000..432ab7eaa3
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/picture-tag.https.html
@@ -0,0 +1,102 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "picture-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for picture-tag to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "picture-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for picture-tag to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "picture-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for picture-tag to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "picture-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for picture-tag to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "picture-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for picture-tag to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "picture-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for picture-tag to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "picture-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for picture-tag to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "picture-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for picture-tag to same-http origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/unset/script-tag-dynamic-import.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/script-tag-dynamic-import.https.html
new file mode 100644
index 0000000000..0ce2794c56
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/script-tag-dynamic-import.https.html
@@ -0,0 +1,42 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "script-tag-dynamic-import",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for script-tag-dynamic-import to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "script-tag-dynamic-import",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for script-tag-dynamic-import to same-https origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/unset/script-tag.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/script-tag.https.html
new file mode 100644
index 0000000000..3cd5eb3a34
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/script-tag.https.html
@@ -0,0 +1,102 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "script-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for script-tag to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "script-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for script-tag to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "script-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for script-tag to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "script-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for script-tag to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "script-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for script-tag to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "script-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for script-tag to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "script-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for script-tag to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "script-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for script-tag to same-http origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/unset/sharedworker-classic.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/sharedworker-classic.https.html
new file mode 100644
index 0000000000..896c0297d5
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/sharedworker-classic.https.html
@@ -0,0 +1,62 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-classic",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for sharedworker-classic to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-classic",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for sharedworker-classic to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-classic",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for sharedworker-classic to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-classic",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for sharedworker-classic to same-http origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/unset/sharedworker-import-data.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/sharedworker-import-data.https.html
new file mode 100644
index 0000000000..afc248529b
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/sharedworker-import-data.https.html
@@ -0,0 +1,102 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for sharedworker-import-data to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for sharedworker-import-data to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for sharedworker-import-data to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for sharedworker-import-data to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for sharedworker-import-data to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for sharedworker-import-data to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for sharedworker-import-data to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for sharedworker-import-data to same-http origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/unset/sharedworker-import.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/sharedworker-import.https.html
new file mode 100644
index 0000000000..71679b658a
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/sharedworker-import.https.html
@@ -0,0 +1,102 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-import",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for sharedworker-import to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-import",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for sharedworker-import to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-import",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for sharedworker-import to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-import",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for sharedworker-import to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-import",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for sharedworker-import to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-import",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for sharedworker-import to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-import",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for sharedworker-import to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-import",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for sharedworker-import to same-http origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/unset/sharedworker-module.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/sharedworker-module.https.html
new file mode 100644
index 0000000000..1a371ce028
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/sharedworker-module.https.html
@@ -0,0 +1,62 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-module",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for sharedworker-module to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-module",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for sharedworker-module to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-module",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for sharedworker-module to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "sharedworker-module",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for sharedworker-module to same-http origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/unset/video-tag.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/video-tag.https.html
new file mode 100644
index 0000000000..56c9a4cf5a
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/video-tag.https.html
@@ -0,0 +1,102 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "video-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for video-tag to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "video-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for video-tag to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "video-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for video-tag to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "video-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for video-tag to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "video-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for video-tag to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "video-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for video-tag to same-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "video-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for video-tag to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "video-tag",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for video-tag to same-https origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/unset/websocket.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/websocket.https.html
new file mode 100644
index 0000000000..49b80c448f
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/websocket.https.html
@@ -0,0 +1,52 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-wss",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for websocket to same-wss origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-ws",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for websocket to cross-ws origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-ws",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for websocket to same-ws origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/unset/worker-classic.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/worker-classic.https.html
new file mode 100644
index 0000000000..2717be37cc
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/worker-classic.https.html
@@ -0,0 +1,62 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-classic",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worker-classic to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-classic",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worker-classic to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-classic",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-classic to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-classic",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-classic to same-http origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/unset/worker-import-data.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/worker-import-data.https.html
new file mode 100644
index 0000000000..ae559b90e9
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/worker-import-data.https.html
@@ -0,0 +1,102 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worker-import-data to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worker-import-data to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-import-data to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-import-data to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-import-data to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-import-data to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-import-data to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-import-data to same-http origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/unset/worker-import.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/worker-import.https.html
new file mode 100644
index 0000000000..208ae14bfa
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/worker-import.https.html
@@ -0,0 +1,102 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-import",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worker-import to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-import",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worker-import to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-import",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-import to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-import",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-import to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-import",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-import to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-import",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-import to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-import",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-import to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-import",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-import to same-http origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/unset/worker-module.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/worker-module.https.html
new file mode 100644
index 0000000000..6cf33d54f5
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/worker-module.https.html
@@ -0,0 +1,62 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-module",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worker-module to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-module",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worker-module to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-module",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-module to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worker-module",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-module to same-http origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/unset/worklet-animation-import-data.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/worklet-animation-import-data.https.html
new file mode 100644
index 0000000000..77fdf272d1
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/worklet-animation-import-data.https.html
@@ -0,0 +1,102 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-animation-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worklet-animation-import-data to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-animation-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worklet-animation-import-data to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-animation-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-animation-import-data to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-animation-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-animation-import-data to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-animation-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-animation-import-data to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-animation-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-animation-import-data to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-animation-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-animation-import-data to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-animation-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-animation-import-data to same-http origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/unset/worklet-animation.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/worklet-animation.https.html
new file mode 100644
index 0000000000..64d00ddd5b
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/worklet-animation.https.html
@@ -0,0 +1,102 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-animation",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worklet-animation to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-animation",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worklet-animation to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-animation",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-animation to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-animation",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-animation to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-animation",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-animation to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-animation",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-animation to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-animation",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-animation to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-animation",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-animation to same-http origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/unset/worklet-audio-import-data.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/worklet-audio-import-data.https.html
new file mode 100644
index 0000000000..faa0c457fa
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/worklet-audio-import-data.https.html
@@ -0,0 +1,102 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-audio-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worklet-audio-import-data to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-audio-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worklet-audio-import-data to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-audio-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-audio-import-data to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-audio-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-audio-import-data to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-audio-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-audio-import-data to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-audio-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-audio-import-data to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-audio-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-audio-import-data to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-audio-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-audio-import-data to same-http origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/unset/worklet-audio.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/worklet-audio.https.html
new file mode 100644
index 0000000000..7151f534de
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/worklet-audio.https.html
@@ -0,0 +1,102 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-audio",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worklet-audio to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-audio",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worklet-audio to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-audio",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-audio to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-audio",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-audio to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-audio",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-audio to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-audio",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-audio to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-audio",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-audio to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-audio",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-audio to same-http origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/unset/worklet-layout-import-data.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/worklet-layout-import-data.https.html
new file mode 100644
index 0000000000..da7c9a797e
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/worklet-layout-import-data.https.html
@@ -0,0 +1,102 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-layout-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worklet-layout-import-data to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-layout-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worklet-layout-import-data to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-layout-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-layout-import-data to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-layout-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-layout-import-data to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-layout-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-layout-import-data to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-layout-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-layout-import-data to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-layout-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-layout-import-data to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-layout-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-layout-import-data to same-http origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/unset/worklet-layout.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/worklet-layout.https.html
new file mode 100644
index 0000000000..f2335d35ae
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/worklet-layout.https.html
@@ -0,0 +1,102 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-layout",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worklet-layout to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-layout",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worklet-layout to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-layout",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-layout to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-layout",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-layout to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-layout",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-layout to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-layout",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-layout to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-layout",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-layout to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-layout",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-layout to same-http origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/unset/worklet-paint-import-data.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/worklet-paint-import-data.https.html
new file mode 100644
index 0000000000..5c1970599d
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/worklet-paint-import-data.https.html
@@ -0,0 +1,102 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-paint-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worklet-paint-import-data to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-paint-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worklet-paint-import-data to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-paint-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-paint-import-data to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-paint-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-paint-import-data to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-paint-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-paint-import-data to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-paint-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-paint-import-data to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-paint-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-paint-import-data to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-paint-import-data",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-paint-import-data to same-http origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/unset/worklet-paint.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/worklet-paint.https.html
new file mode 100644
index 0000000000..77cf29176c
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/worklet-paint.https.html
@@ -0,0 +1,102 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-paint",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worklet-paint to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-paint",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worklet-paint to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-paint",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-paint to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-paint",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-paint to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-paint",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-paint to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-paint",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-paint to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-paint",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-paint to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "worklet-paint",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worklet-paint to same-http origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/top.meta/unset/xhr.https.html b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/xhr.https.html
new file mode 100644
index 0000000000..0f164b4077
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/top.meta/unset/xhr.https.html
@@ -0,0 +1,102 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for xhr to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for xhr to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-classic-data.http-rp/opt-in/fetch.https.html b/testing/web-platform/tests/mixed-content/gen/worker-classic-data.http-rp/opt-in/fetch.https.html
new file mode 100644
index 0000000000..d2b13b2734
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-classic-data.http-rp/opt-in/fetch.https.html
@@ -0,0 +1,172 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for fetch to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for fetch to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-https origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-https origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-classic-data.http-rp/opt-in/fetch.https.html.headers b/testing/web-platform/tests/mixed-content/gen/worker-classic-data.http-rp/opt-in/fetch.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-classic-data.http-rp/opt-in/fetch.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-classic-data.http-rp/opt-in/websocket.https.html b/testing/web-platform/tests/mixed-content/gen/worker-classic-data.http-rp/opt-in/websocket.https.html
new file mode 100644
index 0000000000..01263c9ee6
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-classic-data.http-rp/opt-in/websocket.https.html
@@ -0,0 +1,67 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-wss",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for websocket to same-wss origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-ws",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for websocket to cross-ws origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-ws",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for websocket to same-ws origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-classic-data.http-rp/opt-in/websocket.https.html.headers b/testing/web-platform/tests/mixed-content/gen/worker-classic-data.http-rp/opt-in/websocket.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-classic-data.http-rp/opt-in/websocket.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-classic-data.http-rp/opt-in/xhr.https.html b/testing/web-platform/tests/mixed-content/gen/worker-classic-data.http-rp/opt-in/xhr.https.html
new file mode 100644
index 0000000000..71ee538072
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-classic-data.http-rp/opt-in/xhr.https.html
@@ -0,0 +1,172 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for xhr to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for xhr to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-https origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-https origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-classic-data.http-rp/opt-in/xhr.https.html.headers b/testing/web-platform/tests/mixed-content/gen/worker-classic-data.http-rp/opt-in/xhr.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-classic-data.http-rp/opt-in/xhr.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-classic-data.meta/opt-in/fetch.https.html b/testing/web-platform/tests/mixed-content/gen/worker-classic-data.meta/opt-in/fetch.https.html
new file mode 100644
index 0000000000..e8693e4fef
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-classic-data.meta/opt-in/fetch.https.html
@@ -0,0 +1,68 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for fetch to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-classic-data.meta/opt-in/websocket.https.html b/testing/web-platform/tests/mixed-content/gen/worker-classic-data.meta/opt-in/websocket.https.html
new file mode 100644
index 0000000000..af1d836250
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-classic-data.meta/opt-in/websocket.https.html
@@ -0,0 +1,68 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-wss",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for websocket to same-wss origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-ws",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for websocket to cross-ws origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-ws",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for websocket to same-ws origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-classic-data.meta/opt-in/xhr.https.html b/testing/web-platform/tests/mixed-content/gen/worker-classic-data.meta/opt-in/xhr.https.html
new file mode 100644
index 0000000000..e8a86f79e7
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-classic-data.meta/opt-in/xhr.https.html
@@ -0,0 +1,68 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for xhr to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-classic-data.meta/unset/fetch.https.html b/testing/web-platform/tests/mixed-content/gen/worker-classic-data.meta/unset/fetch.https.html
new file mode 100644
index 0000000000..da5a674c54
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-classic-data.meta/unset/fetch.https.html
@@ -0,0 +1,142 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for fetch to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for fetch to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-classic-data.meta/unset/websocket.https.html b/testing/web-platform/tests/mixed-content/gen/worker-classic-data.meta/unset/websocket.https.html
new file mode 100644
index 0000000000..01263c9ee6
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-classic-data.meta/unset/websocket.https.html
@@ -0,0 +1,67 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-wss",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for websocket to same-wss origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-ws",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for websocket to cross-ws origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-ws",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for websocket to same-ws origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-classic-data.meta/unset/xhr.https.html b/testing/web-platform/tests/mixed-content/gen/worker-classic-data.meta/unset/xhr.https.html
new file mode 100644
index 0000000000..431e05aa50
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-classic-data.meta/unset/xhr.https.html
@@ -0,0 +1,142 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for xhr to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for xhr to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-classic.http-rp/opt-in/fetch.https.html b/testing/web-platform/tests/mixed-content/gen/worker-classic.http-rp/opt-in/fetch.https.html
new file mode 100644
index 0000000000..f24dc7a2ac
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-classic.http-rp/opt-in/fetch.https.html
@@ -0,0 +1,232 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for fetch to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for fetch to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-https origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-https origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-classic.http-rp/opt-in/websocket.https.html b/testing/web-platform/tests/mixed-content/gen/worker-classic.http-rp/opt-in/websocket.https.html
new file mode 100644
index 0000000000..4357a44457
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-classic.http-rp/opt-in/websocket.https.html
@@ -0,0 +1,85 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-wss",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for websocket to same-wss origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-ws",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for websocket to cross-ws origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-ws",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for websocket to same-ws origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-classic.http-rp/opt-in/worker-classic.https.html b/testing/web-platform/tests/mixed-content/gen/worker-classic.http-rp/opt-in/worker-classic.https.html
new file mode 100644
index 0000000000..5dde9baae5
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-classic.http-rp/opt-in/worker-classic.https.html
@@ -0,0 +1,106 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "worker-classic",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worker-classic to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "worker-classic",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worker-classic to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "worker-classic",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-classic to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "worker-classic",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-classic to same-http origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-classic.http-rp/opt-in/worker-module.https.html b/testing/web-platform/tests/mixed-content/gen/worker-classic.http-rp/opt-in/worker-module.https.html
new file mode 100644
index 0000000000..6672e464a3
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-classic.http-rp/opt-in/worker-module.https.html
@@ -0,0 +1,106 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "worker-module",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worker-module to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "worker-module",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worker-module to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "worker-module",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-module to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "worker-module",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-module to same-http origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-classic.http-rp/opt-in/xhr.https.html b/testing/web-platform/tests/mixed-content/gen/worker-classic.http-rp/opt-in/xhr.https.html
new file mode 100644
index 0000000000..ac5f5d5dbf
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-classic.http-rp/opt-in/xhr.https.html
@@ -0,0 +1,232 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for xhr to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for xhr to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-https origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-https origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-classic.http-rp/unset/fetch.https.html b/testing/web-platform/tests/mixed-content/gen/worker-classic.http-rp/unset/fetch.https.html
new file mode 100644
index 0000000000..87e7771606
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-classic.http-rp/unset/fetch.https.html
@@ -0,0 +1,142 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for fetch to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for fetch to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-classic.http-rp/unset/fetch.https.html.headers b/testing/web-platform/tests/mixed-content/gen/worker-classic.http-rp/unset/fetch.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-classic.http-rp/unset/fetch.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-classic.http-rp/unset/websocket.https.html b/testing/web-platform/tests/mixed-content/gen/worker-classic.http-rp/unset/websocket.https.html
new file mode 100644
index 0000000000..ebfb71e2f8
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-classic.http-rp/unset/websocket.https.html
@@ -0,0 +1,67 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-wss",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for websocket to same-wss origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-ws",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for websocket to cross-ws origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-ws",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for websocket to same-ws origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-classic.http-rp/unset/websocket.https.html.headers b/testing/web-platform/tests/mixed-content/gen/worker-classic.http-rp/unset/websocket.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-classic.http-rp/unset/websocket.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-classic.http-rp/unset/worker-classic.https.html b/testing/web-platform/tests/mixed-content/gen/worker-classic.http-rp/unset/worker-classic.https.html
new file mode 100644
index 0000000000..e5f825d577
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-classic.http-rp/unset/worker-classic.https.html
@@ -0,0 +1,82 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "worker-classic",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worker-classic to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "worker-classic",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worker-classic to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "worker-classic",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-classic to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "worker-classic",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-classic to same-http origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-classic.http-rp/unset/worker-classic.https.html.headers b/testing/web-platform/tests/mixed-content/gen/worker-classic.http-rp/unset/worker-classic.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-classic.http-rp/unset/worker-classic.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-classic.http-rp/unset/worker-module.https.html b/testing/web-platform/tests/mixed-content/gen/worker-classic.http-rp/unset/worker-module.https.html
new file mode 100644
index 0000000000..f10998e3f0
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-classic.http-rp/unset/worker-module.https.html
@@ -0,0 +1,82 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "worker-module",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worker-module to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "worker-module",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worker-module to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "worker-module",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-module to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "worker-module",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-module to same-http origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-classic.http-rp/unset/worker-module.https.html.headers b/testing/web-platform/tests/mixed-content/gen/worker-classic.http-rp/unset/worker-module.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-classic.http-rp/unset/worker-module.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-classic.http-rp/unset/xhr.https.html b/testing/web-platform/tests/mixed-content/gen/worker-classic.http-rp/unset/xhr.https.html
new file mode 100644
index 0000000000..39216ef098
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-classic.http-rp/unset/xhr.https.html
@@ -0,0 +1,142 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for xhr to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for xhr to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-classic"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-classic.http-rp/unset/xhr.https.html.headers b/testing/web-platform/tests/mixed-content/gen/worker-classic.http-rp/unset/xhr.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-classic.http-rp/unset/xhr.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-module-data.http-rp/opt-in/fetch.https.html b/testing/web-platform/tests/mixed-content/gen/worker-module-data.http-rp/opt-in/fetch.https.html
new file mode 100644
index 0000000000..90cfde3618
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-module-data.http-rp/opt-in/fetch.https.html
@@ -0,0 +1,172 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for fetch to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for fetch to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-https origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-https origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-module-data.http-rp/opt-in/fetch.https.html.headers b/testing/web-platform/tests/mixed-content/gen/worker-module-data.http-rp/opt-in/fetch.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-module-data.http-rp/opt-in/fetch.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-module-data.http-rp/opt-in/websocket.https.html b/testing/web-platform/tests/mixed-content/gen/worker-module-data.http-rp/opt-in/websocket.https.html
new file mode 100644
index 0000000000..a202f1af21
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-module-data.http-rp/opt-in/websocket.https.html
@@ -0,0 +1,67 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-wss",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for websocket to same-wss origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-ws",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for websocket to cross-ws origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-ws",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for websocket to same-ws origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-module-data.http-rp/opt-in/websocket.https.html.headers b/testing/web-platform/tests/mixed-content/gen/worker-module-data.http-rp/opt-in/websocket.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-module-data.http-rp/opt-in/websocket.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-module-data.http-rp/opt-in/xhr.https.html b/testing/web-platform/tests/mixed-content/gen/worker-module-data.http-rp/opt-in/xhr.https.html
new file mode 100644
index 0000000000..1e26f150a6
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-module-data.http-rp/opt-in/xhr.https.html
@@ -0,0 +1,172 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for xhr to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for xhr to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-https origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-https origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-module-data.http-rp/opt-in/xhr.https.html.headers b/testing/web-platform/tests/mixed-content/gen/worker-module-data.http-rp/opt-in/xhr.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-module-data.http-rp/opt-in/xhr.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-module-data.meta/opt-in/fetch.https.html b/testing/web-platform/tests/mixed-content/gen/worker-module-data.meta/opt-in/fetch.https.html
new file mode 100644
index 0000000000..8ed388b1e7
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-module-data.meta/opt-in/fetch.https.html
@@ -0,0 +1,68 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for fetch to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-module-data.meta/opt-in/websocket.https.html b/testing/web-platform/tests/mixed-content/gen/worker-module-data.meta/opt-in/websocket.https.html
new file mode 100644
index 0000000000..ba6c014439
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-module-data.meta/opt-in/websocket.https.html
@@ -0,0 +1,68 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-wss",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for websocket to same-wss origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-ws",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for websocket to cross-ws origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-ws",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for websocket to same-ws origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-module-data.meta/opt-in/xhr.https.html b/testing/web-platform/tests/mixed-content/gen/worker-module-data.meta/opt-in/xhr.https.html
new file mode 100644
index 0000000000..808e6b6f5a
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-module-data.meta/opt-in/xhr.https.html
@@ -0,0 +1,68 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <meta http-equiv="Content-Security-Policy" content="block-all-mixed-content">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for xhr to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-module-data.meta/unset/fetch.https.html b/testing/web-platform/tests/mixed-content/gen/worker-module-data.meta/unset/fetch.https.html
new file mode 100644
index 0000000000..1a04af8678
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-module-data.meta/unset/fetch.https.html
@@ -0,0 +1,142 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for fetch to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for fetch to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-module-data.meta/unset/websocket.https.html b/testing/web-platform/tests/mixed-content/gen/worker-module-data.meta/unset/websocket.https.html
new file mode 100644
index 0000000000..a202f1af21
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-module-data.meta/unset/websocket.https.html
@@ -0,0 +1,67 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-wss",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for websocket to same-wss origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-ws",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for websocket to cross-ws origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-ws",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for websocket to same-ws origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-module-data.meta/unset/xhr.https.html b/testing/web-platform/tests/mixed-content/gen/worker-module-data.meta/unset/xhr.https.html
new file mode 100644
index 0000000000..da80502084
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-module-data.meta/unset/xhr.https.html
@@ -0,0 +1,142 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for xhr to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for xhr to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module-data"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-module.http-rp/opt-in/fetch.https.html b/testing/web-platform/tests/mixed-content/gen/worker-module.http-rp/opt-in/fetch.https.html
new file mode 100644
index 0000000000..0328c5ec55
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-module.http-rp/opt-in/fetch.https.html
@@ -0,0 +1,232 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for fetch to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for fetch to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-https origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-https origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-module.http-rp/opt-in/websocket.https.html b/testing/web-platform/tests/mixed-content/gen/worker-module.http-rp/opt-in/websocket.https.html
new file mode 100644
index 0000000000..0e7c357ae2
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-module.http-rp/opt-in/websocket.https.html
@@ -0,0 +1,85 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-wss",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for websocket to same-wss origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-ws",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for websocket to cross-ws origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-ws",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for websocket to same-ws origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-module.http-rp/opt-in/worker-classic.https.html b/testing/web-platform/tests/mixed-content/gen/worker-module.http-rp/opt-in/worker-classic.https.html
new file mode 100644
index 0000000000..e8eba008f9
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-module.http-rp/opt-in/worker-classic.https.html
@@ -0,0 +1,106 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "worker-classic",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worker-classic to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "worker-classic",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worker-classic to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "worker-classic",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-classic to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "worker-classic",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-classic to same-http origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-module.http-rp/opt-in/worker-module.https.html b/testing/web-platform/tests/mixed-content/gen/worker-module.http-rp/opt-in/worker-module.https.html
new file mode 100644
index 0000000000..f4348836ad
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-module.http-rp/opt-in/worker-module.https.html
@@ -0,0 +1,106 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "worker-module",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worker-module to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "worker-module",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worker-module to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "worker-module",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-module to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "worker-module",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-module to same-http origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-module.http-rp/opt-in/xhr.https.html b/testing/web-platform/tests/mixed-content/gen/worker-module.http-rp/opt-in/xhr.https.html
new file mode 100644
index 0000000000..9ede710e54
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-module.http-rp/opt-in/xhr.https.html
@@ -0,0 +1,232 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for xhr to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for xhr to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-https origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-https",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [
+                  {
+                    "deliveryType": "http-rp",
+                    "key": "mixedContent",
+                    "value": "opt-in"
+                  }
+                ],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-https origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-module.http-rp/unset/fetch.https.html b/testing/web-platform/tests/mixed-content/gen/worker-module.http-rp/unset/fetch.https.html
new file mode 100644
index 0000000000..f2f3dafcfb
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-module.http-rp/unset/fetch.https.html
@@ -0,0 +1,142 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for fetch to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for fetch to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "fetch",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for fetch to same-http origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-module.http-rp/unset/fetch.https.html.headers b/testing/web-platform/tests/mixed-content/gen/worker-module.http-rp/unset/fetch.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-module.http-rp/unset/fetch.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-module.http-rp/unset/websocket.https.html b/testing/web-platform/tests/mixed-content/gen/worker-module.http-rp/unset/websocket.https.html
new file mode 100644
index 0000000000..220c21c411
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-module.http-rp/unset/websocket.https.html
@@ -0,0 +1,67 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-wss",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for websocket to same-wss origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-ws",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for websocket to cross-ws origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-ws",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "websocket",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for websocket to same-ws origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-module.http-rp/unset/websocket.https.html.headers b/testing/web-platform/tests/mixed-content/gen/worker-module.http-rp/unset/websocket.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-module.http-rp/unset/websocket.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-module.http-rp/unset/worker-classic.https.html b/testing/web-platform/tests/mixed-content/gen/worker-module.http-rp/unset/worker-classic.https.html
new file mode 100644
index 0000000000..9619ce4cd7
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-module.http-rp/unset/worker-classic.https.html
@@ -0,0 +1,82 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "worker-classic",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worker-classic to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "worker-classic",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worker-classic to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "worker-classic",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-classic to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "worker-classic",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-classic to same-http origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-module.http-rp/unset/worker-classic.https.html.headers b/testing/web-platform/tests/mixed-content/gen/worker-module.http-rp/unset/worker-classic.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-module.http-rp/unset/worker-classic.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-module.http-rp/unset/worker-module.https.html b/testing/web-platform/tests/mixed-content/gen/worker-module.http-rp/unset/worker-module.https.html
new file mode 100644
index 0000000000..d6e28445e0
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-module.http-rp/unset/worker-module.https.html
@@ -0,0 +1,82 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "worker-module",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worker-module to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "worker-module",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for worker-module to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "worker-module",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-module to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "worker-module",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for worker-module to same-http origin and no-redirect redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-module.http-rp/unset/worker-module.https.html.headers b/testing/web-platform/tests/mixed-content/gen/worker-module.http-rp/unset/worker-module.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-module.http-rp/unset/worker-module.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-module.http-rp/unset/xhr.https.html b/testing/web-platform/tests/mixed-content/gen/worker-module.http-rp/unset/xhr.https.html
new file mode 100644
index 0000000000..176f5aecd4
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-module.http-rp/unset/xhr.https.html
@@ -0,0 +1,142 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! Generated by `common/security-features/tools/generate.py --spec mixed-content/` -->
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="timeout" content="long">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/security-features/resources/common.sub.js"></script>
+    <script src="../../../generic/test-case.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      TestCase(
+        [
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for xhr to same-https origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "allowed",
+            "origin": "same-https",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects allowed for xhr to same-https origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "cross-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to cross-http origin and swap-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "keep-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and keep-scheme redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "no-redirect",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and no-redirect redirection from https context."
+          },
+          {
+            "expectation": "blocked",
+            "origin": "same-http",
+            "redirection": "swap-scheme",
+            "source_context_list": [
+              {
+                "policyDeliveries": [],
+                "sourceContextType": "worker-module"
+              }
+            ],
+            "source_scheme": "https",
+            "subresource": "xhr",
+            "subresource_policy_deliveries": [],
+            "test_description": "Mixed-Content: Expects blocked for xhr to same-http origin and swap-scheme redirection from https context."
+          }
+        ],
+        new SanityChecker()
+      ).start();
+    </script>
+    <div id="log"></div>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/gen/worker-module.http-rp/unset/xhr.https.html.headers b/testing/web-platform/tests/mixed-content/gen/worker-module.http-rp/unset/xhr.https.html.headers
new file mode 100644
index 0000000000..46e2255e38
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/gen/worker-module.http-rp/unset/xhr.https.html.headers
@@ -0,0 +1 @@
+Content-Security-Policy: block-all-mixed-content
diff --git a/testing/web-platform/tests/mixed-content/generic/sanity-checker.js b/testing/web-platform/tests/mixed-content/generic/sanity-checker.js
new file mode 100644
index 0000000000..55a103adf0
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/generic/sanity-checker.js
@@ -0,0 +1,53 @@
+// The SanityChecker is used in debug mode to identify problems with the
+// structure of the testsuite and to force early test failures.
+// In release mode it is mocked out to do nothing.
+function SanityChecker()  {}
+
+SanityChecker.prototype.checkScenario = function(scenario, resourceInvoker) {
+  // Check if scenario is valid.
+  test(function() {
+    var expectedFields = SPEC_JSON["test_expansion_schema"];
+
+    for (var field in expectedFields) {
+      if (field == "expansion")
+        continue
+
+      assert_own_property(scenario, field,
+                          "The scenario should contain field '" + field + "'.")
+
+      var expectedFieldList = expectedFields[field];
+      if (!expectedFieldList.hasOwnProperty('length')) {
+        var expectedFieldList = [];
+        for (var key in expectedFields[field]) {
+          expectedFieldList = expectedFieldList.concat(expectedFields[field][key])
+        }
+      }
+      assert_in_array(scenario[field], expectedFieldList,
+                      "Scenario's " + field + " is one of: " +
+                      expectedFieldList.join(", ")) + "."
+    }
+
+    // Check if the protocol is matched.
+    assert_equals(scenario["source_scheme"] + ":", location.protocol,
+                  "Protocol of the test page should match the scenario.")
+
+    assert_own_property(resourceInvoker, scenario.subresource,
+                        "Subresource should be supported");
+
+  }, "[MixedContentTestCase] The test scenario should be valid.");
+}
+
+// For easier debugging runs, we can fail a test earlier.
+SanityChecker.prototype.setFailTimeout = function(test, timeout) {
+  // Due to missing implementations, tests time out, so we fail them early.
+  // TODO(kristijanburnik): Once WPT rolled in:
+  //   https://github.com/w3c/testharness.js/pull/127
+  // Refactor to make use of step_timeout.
+  setTimeout(function() {
+    test.step(function() {
+      assert_equals(test.phase, test.phases.COMPLETE,
+                    "Expected test to complete.");
+      test.done();
+    })
+  }, timeout || 1000);
+}
diff --git a/testing/web-platform/tests/mixed-content/generic/test-case.sub.js b/testing/web-platform/tests/mixed-content/generic/test-case.sub.js
new file mode 100644
index 0000000000..bfb02a0e61
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/generic/test-case.sub.js
@@ -0,0 +1,61 @@
+/**
+ * @fileoverview Test case for mixed-content in web-platform-tests.
+ * @author burnik@google.com (Kristijan Burnik)
+ */
+
+/**
+ * MixedContentTestCase exercises all the tests for checking browser behavior
+ * when resources regarded as mixed-content are requested. A single run covers
+ * only a single scenario.
+ * @param {object} scenario A JSON describing the test arrangement and
+ *     expectation(s). Refer to /mixed-content/spec.src.json for details.
+ * @param {string} description The test scenario verbose description.
+ * @param {SanityChecker} sanityChecker Instance of an object used to check the
+ *     running scenario. Useful in debug mode. See ./sanity-checker.js.
+ *     Run {@code ./tools/generate.py -h} for info on test generating modes.
+ * @return {object} Object wrapping the start method used to run the test.
+ */
+function TestCase(scenarios, sanityChecker) {
+  function runTest(scenario) {
+    sanityChecker.checkScenario(scenario, subresourceMap);
+
+    const urls = getRequestURLs(scenario.subresource,
+                                scenario.origin,
+                                scenario.redirection);
+    const checkResult = _ => {
+      // Send request to check if the key has been torn down.
+      return xhrRequest(urls.assertUrl)
+        .then(assertResult => {
+            // Now check if the value has been torn down. If it's still there,
+            // we have blocked the request to mixed-content.
+            assert_equals(assertResult.status, scenario.expectation,
+              "The resource request should be '" + scenario.expectation + "'.");
+          });
+    };
+
+    /** @type {Subresource} */
+    const subresource = {
+      subresourceType: scenario.subresource,
+      url: urls.testUrl,
+      policyDeliveries: scenario.subresource_policy_deliveries,
+    };
+
+    promise_test(() => {
+      return xhrRequest(urls.announceUrl)
+        // Send out the real resource request.
+        // This should tear down the key if it's not blocked.
+        .then(_ => invokeRequest(subresource, scenario.source_context_list))
+        // We check the key state, regardless of whether the main request
+        // succeeded or failed.
+        .then(checkResult, checkResult);
+      }, scenario.test_description);
+  }  // runTest
+
+  function runTests() {
+    for (const scenario of scenarios) {
+      runTest(scenario);
+    }
+  }
+
+  return {start: runTests};
+}
diff --git a/testing/web-platform/tests/mixed-content/imageset.https.sub.html b/testing/web-platform/tests/mixed-content/imageset.https.sub.html
new file mode 100644
index 0000000000..1f3d0471fb
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/imageset.https.sub.html
@@ -0,0 +1,31 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>Mixed-Content: imageset tests</title>
+    <meta charset='utf-8'>
+    <meta name="description" content="Test behavior of imageset resources, making sure that resources are not downloaded.">
+    <link rel="author" title="Yoav Weiss" href="yoav@yoav.ws">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/preload/resources/preload_helper.js"></script>
+    <script>
+      var t = async_test('Makes sure imageset blockable resources are not downloaded');
+    </script>
+  </head>
+  <body>
+  <img src="http://{{domains[]}}:{{ports[http][0]}}/images/smiley.png?img_src">
+  <picture>
+    <source srcset="http://{{domains[]}}:{{ports[http][0]}}/images/smiley.png?picture">
+    <img>
+  </picture>
+  <img srcset="http://{{domains[]}}:{{ports[http][0]}}/images/smiley.png?img_srcset">
+  <script>
+    window.addEventListener("load", t.step_func(function() {
+        verifyNumberOfResourceTimingEntries("http://{{domains[]}}:{{ports[http][0]}}/images/smiley.png?img_src", 1);
+        verifyNumberOfResourceTimingEntries("http://{{domains[]}}:{{ports[http][0]}}/images/smiley.png?picture", 0);
+        verifyNumberOfResourceTimingEntries("http://{{domains[]}}:{{ports[http][0]}}/images/smiley.png?img_srcset", 0);
+        t.done();
+    }));
+  </script>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/nested-iframes.window.js b/testing/web-platform/tests/mixed-content/nested-iframes.window.js
new file mode 100644
index 0000000000..daa0110471
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/nested-iframes.window.js
@@ -0,0 +1,25 @@
+// META: script=/common/get-host-info.sub.js
+
+const t1 = async_test("HTTP fetch");
+const t2 = async_test("HTTPS fetch");
+
+onmessage = function(e) {
+  const {protocol, success} = e.data;
+  if (protocol == "http:") {
+    t1.step(() => assert_false(success, "success"));
+    t1.done();
+  } else if (protocol == "https:") {
+    t2.step(() => assert_true(success, "success"));
+    t2.done();
+  } else {
+    [t1, t2].forEach(t => {
+      t.step(() => assert_unreached("Unknown message"));
+      t.done();
+    });
+  }
+};
+
+const httpsFrame = document.createElement("iframe");
+httpsFrame.src = get_host_info().HTTPS_ORIGIN + "/mixed-content/resources/middle-frame.html";
+
+document.body.appendChild(httpsFrame);
diff --git a/testing/web-platform/tests/mixed-content/resources/blob-popup.html b/testing/web-platform/tests/mixed-content/resources/blob-popup.html
new file mode 100644
index 0000000000..bc3c97ef8d
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/resources/blob-popup.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<script>
+  opener.postMessage({
+      potentially_trustworthy: location.protocol === "https:",
+      js_blob_url: URL.createObjectURL(
+          new Blob([`const message = "Hello World!"`],
+                   {type: 'application/javascript'})),
+  }, "*");
+</script>
diff --git a/testing/web-platform/tests/mixed-content/resources/middle-frame.html b/testing/web-platform/tests/mixed-content/resources/middle-frame.html
new file mode 100644
index 0000000000..58d14d61ef
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/resources/middle-frame.html
@@ -0,0 +1,39 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <script src="/common/get-host-info.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      onmessage = e => parent.postMessage(e.data, "*");
+
+      const path = "/fetch/api/resources/cors-top.txt";
+      const http_url = get_host_info().HTTP_ORIGIN + path;
+      const https_url = get_host_info().HTTPS_ORIGIN + path;
+
+      const ifr = document.createElement("iframe");
+      ifr.src = `data:text/html,
+        <!DOCTYPE html>
+        <script>
+          async function try_fetch(url) {
+            try {
+              const response = await fetch(url);
+              return response.ok;
+            } catch(e) {
+              return false;
+            }
+          }
+          async function try_fetch_and_report(url) {
+            parent.postMessage({
+              protocol: new URL(url).protocol,
+              success: await try_fetch(url),
+            }, "*");
+          }
+          try_fetch_and_report("${http_url}");
+          try_fetch_and_report("${https_url}");
+        <\/script>
+      `;
+      document.body.appendChild(ifr);
+    </script>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/spec.src.json b/testing/web-platform/tests/mixed-content/spec.src.json
new file mode 100644
index 0000000000..1eb6f44540
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/spec.src.json
@@ -0,0 +1,437 @@
+{
+  "test_description_template": "Mixed-Content: Expects %(expectation)s for %(subresource)s to %(origin)s origin and %(redirection)s redirection from %(source_scheme)s context.",
+  "test_page_title_template": "Mixed-Content: %(title)s",
+  "specification": [
+    {
+      // optionally-blockable
+      "title": "Optionally-blockable content",
+      "description": "Test behavior of optionally-blockable content",
+      "specification_url": "http://www.w3.org/TR/mixed-content/#category-optionally-blockable",
+      "test_expansion": [
+        {
+          // opt-in-blocks
+          "expansion": "default",
+          "source_scheme": "https",
+          "source_context_list": "*",
+          "delivery_type": "*",
+          "delivery_value": "opt-in",
+          "redirection": "*",
+          "subresource": [
+            "audio-tag",
+            "img-tag",
+            "video-tag"
+          ],
+          "origin": [
+            "cross-http",
+            "same-http"
+          ],
+          "expectation": "blocked"
+        },
+        {
+          // opt-in-blocks-redirects
+          "expansion": "default",
+          "source_scheme": "https",
+          "source_context_list": "*",
+          "delivery_type": "*",
+          "delivery_value": "opt-in",
+          "redirection": "swap-scheme",
+          "subresource": [
+            "audio-tag",
+            "img-tag",
+            "video-tag"
+          ],
+          "origin": [
+            "same-https",
+            "cross-https"
+          ],
+          "expectation": "blocked"
+        },
+        {
+          // no-opt-in-allows
+          "expansion": "default",
+          "source_scheme": "https",
+          "source_context_list": "*",
+          "delivery_type": "*",
+          "delivery_value": null,
+          "redirection": "*",
+          "subresource": [
+            "audio-tag",
+            "img-tag",
+            "video-tag"
+          ],
+          "origin": [
+            "cross-http",
+            "same-http"
+          ],
+          "expectation": "allowed"
+        }
+      ]
+    },
+    {
+      // blockable
+      "title": "Blockable content",
+      "description": "Test behavior of blockable content.",
+      "specification_url": "http://www.w3.org/TR/mixed-content/#category-blockable",
+      "test_expansion": [
+        {
+          // opt-in-blocks
+          "expansion": "default",
+          "source_scheme": "https",
+          "source_context_list": "*",
+          "delivery_type": "*",
+          "delivery_value": "opt-in",
+          "redirection": "*",
+          "subresource": [
+            "a-tag",
+            "beacon",
+            "fetch",
+            "link-css-tag",
+            "link-prefetch-tag",
+            "object-tag",
+            "picture-tag",
+            "script-tag",
+            "sharedworker-classic",
+            "sharedworker-import",
+            "sharedworker-import-data",
+            "sharedworker-module",
+            "websocket",
+            "worker-classic",
+            "worker-import",
+            "worker-import-data",
+            "worker-module",
+            "worklet-animation",
+            "worklet-animation-import-data",
+            "worklet-audio",
+            "worklet-audio-import-data",
+            "worklet-layout",
+            "worklet-layout-import-data",
+            "worklet-paint",
+            "worklet-paint-import-data",
+            "xhr"
+          ],
+          "origin": [
+            "cross-http",
+            "same-http"
+          ],
+          "expectation": "blocked"
+        },
+        {
+          // opt-in-blocks-redirects
+          "expansion": "default",
+          "source_scheme": "https",
+          "source_context_list": "*",
+          "delivery_type": "*",
+          "delivery_value": "opt-in",
+          "redirection": "swap-scheme",
+          "subresource": [
+            "a-tag",
+            "beacon",
+            "fetch",
+            "link-css-tag",
+            "link-prefetch-tag",
+            "object-tag",
+            "picture-tag",
+            "script-tag",
+            "sharedworker-classic",
+            "sharedworker-import",
+            "sharedworker-import-data",
+            "sharedworker-module",
+            "websocket",
+            "worker-classic",
+            "worker-import",
+            "worker-import-data",
+            "worker-module",
+            "worklet-animation",
+            "worklet-animation-import-data",
+            "worklet-audio",
+            "worklet-audio-import-data",
+            "worklet-layout",
+            "worklet-layout-import-data",
+            "worklet-paint",
+            "worklet-paint-import-data",
+            "xhr"
+          ],
+          "origin": [
+            "same-https",
+            "cross-https"
+          ],
+          "expectation": "blocked"
+        },
+        {
+          // no-opt-in-blocks
+          "expansion": "default",
+          "source_scheme": "https",
+          "source_context_list": "*",
+          "delivery_type": "*",
+          "delivery_value": null,
+          "redirection": "*",
+          "subresource": [
+            "a-tag",
+            "beacon",
+            "fetch",
+            "link-css-tag",
+            "link-prefetch-tag",
+            "object-tag",
+            "picture-tag",
+            "script-tag",
+            "sharedworker-classic",
+            "sharedworker-import",
+            "sharedworker-import-data",
+            "sharedworker-module",
+            "websocket",
+            "worker-classic",
+            "worker-import",
+            "worker-import-data",
+            "worker-module",
+            "worklet-animation",
+            "worklet-animation-import-data",
+            "worklet-audio",
+            "worklet-audio-import-data",
+            "worklet-layout",
+            "worklet-layout-import-data",
+            "worklet-paint",
+            "worklet-paint-import-data",
+            "xhr"
+          ],
+          "origin": [
+            "cross-http",
+            "same-http"
+          ],
+          "expectation": "blocked"
+        },
+        {
+          // ws-downgrade-blocks
+          "expansion": "default",
+          "source_scheme": "https",
+          "source_context_list": "*",
+          "delivery_type": "*",
+          "delivery_value": "*",
+          "redirection": "*",
+          "subresource": "websocket",
+          "origin": [
+            "cross-ws",
+            "same-ws"
+          ],
+          "expectation": "blocked"
+        }
+      ]
+    },
+    {
+      // allowed
+      "title": "Allowed content",
+      "description": "Test behavior of allowed content.",
+      "specification_url": "http://www.w3.org/TR/mixed-content/",
+      "test_expansion": [
+        {
+          // allowed
+          "expansion": "default",
+          "source_scheme": "https",
+          "source_context_list": "*",
+          "delivery_type": "*",
+          "delivery_value": "*",
+          "redirection": [
+            "no-redirect",
+            "keep-scheme"
+          ],
+          "subresource": "*",
+          "origin": [
+            "same-https"
+          ],
+          "expectation": "allowed"
+        },
+        {
+          // websocket-allowed
+          "expansion": "default",
+          "source_scheme": "https",
+          "source_context_list": "*",
+          "delivery_type": "*",
+          "delivery_value": "*",
+          "redirection": [
+            "no-redirect",
+            "keep-scheme"
+          ],
+          "subresource": "websocket",
+          "origin": [
+            "same-wss"
+          ],
+          "expectation": "allowed"
+        }
+      ]
+    }
+  ],
+  "delivery_key": "mixedContent",
+  "excluded_tests": [
+    {
+      // Skip-redundant-no-opt-in
+      "expansion": "*",
+      "source_scheme": "*",
+      "source_context_list": [
+        // In certain source_context_lists (workers),
+        // this is not redundant because <meta> is not supported.
+        "top",
+        "srcdoc-inherit",
+        "iframe",
+        "iframe-blank-inherit",
+        "worker-classic-data",
+        "worker-module-data",
+        "sharedworker-classic-data",
+        "sharedworker-module-data"
+      ],
+      "delivery_type": "http-rp",
+      "delivery_value": null,
+      "redirection": "*",
+      "subresource": "*",
+      "origin": "*",
+      "expectation": "*"
+    },
+    {
+      // Skip-redundant-for-opt-in-method
+      "expansion": "*",
+      "source_scheme": "*",
+      "source_context_list": "*",
+      "delivery_type": "meta",
+      "delivery_value": "opt-in",
+      "redirection": [
+        "keep-scheme",
+        "swap-scheme"
+      ],
+      "subresource": "*",
+      "origin": "*",
+      "expectation": "*"
+    },
+    {
+      // source_context_list values not yet tested
+      "expansion": "*",
+      "source_scheme": "*",
+      "source_context_list": [
+        "req",
+        "srcdoc-inherit",
+        "srcdoc",
+        "iframe",
+        "iframe-blank-inherit"
+      ],
+      "delivery_type": "*",
+      "delivery_value": "*",
+      "redirection": "*",
+      "subresource": "*",
+      "origin": "*",
+      "expectation": "*"
+    },
+    {
+      // subresource values not yet tested
+      "expansion": "*",
+      "source_scheme": "*",
+      "source_context_list": "*",
+      "delivery_type": "*",
+      "delivery_value": "*",
+      "redirection": "*",
+      "subresource": [
+        "a-tag",
+        "area-tag",
+        "iframe-tag",
+      ],
+      "origin": "*",
+      "expectation": "*"
+    },
+    {
+      // redirections that mixed-content tests don't care
+      "expansion": "*",
+      "source_scheme": "*",
+      "source_context_list": "*",
+      "delivery_type": "*",
+      "delivery_value": "*",
+      "redirection": [
+        "keep-origin",
+        "swap-origin",
+        "downgrade"
+      ],
+      "origin": "*",
+      "subresource": "*",
+      "expectation": "*"
+    },
+  ],
+  "source_context_schema": {
+    "supported_delivery_type": {
+      "top": [
+        "http-rp",
+        "meta"
+      ],
+      "iframe": [
+        "http-rp",
+        "meta"
+      ],
+      "iframe-blank": [
+        "meta"
+      ],
+      "srcdoc": [
+        "meta"
+      ],
+      "worker-classic": [
+        "http-rp"
+      ],
+      "worker-module": [
+        "http-rp"
+      ],
+      "worker-classic-data": [],
+      "worker-module-data": [],
+      "sharedworker-classic": [
+        "http-rp"
+      ],
+      "sharedworker-module": [
+        "http-rp"
+      ],
+      "sharedworker-classic-data": [],
+      "sharedworker-module-data": []
+    }
+  },
+  "subresource_schema": {
+    "supported_delivery_type": {
+      "a-tag": [],
+      "area-tag": [],
+      "audio-tag": [],
+      "beacon": [],
+      "fetch": [],
+      "iframe-tag": [],
+      "img-tag": [],
+      "link-css-tag": [],
+      "link-prefetch-tag": [],
+      "object-tag": [],
+      "picture-tag": [],
+      "script-tag": [],
+      "script-tag-dynamic-import": [],
+      "sharedworker-classic": [],
+      "sharedworker-import": [],
+      "sharedworker-import-data": [],
+      "sharedworker-module": [],
+      "video-tag": [],
+      "websocket": [],
+      "worker-classic": [],
+      "worker-import": [],
+      "worker-import-data": [],
+      "worker-module": [],
+      "worklet-animation": [],
+      "worklet-animation-import-data": [],
+      "worklet-audio": [],
+      "worklet-audio-import-data": [],
+      "worklet-layout": [],
+      "worklet-layout-import-data": [],
+      "worklet-paint": [],
+      "worklet-paint-import-data": [],
+      "xhr": []
+    }
+  },
+  "test_expansion_schema": {
+    "delivery_type": [
+      "http-rp",
+      "meta"
+    ],
+    "delivery_value": [
+      null,
+      "opt-in"
+    ],
+    "expectation": [
+      "allowed",
+      "blocked"
+    ]
+  }
+}
diff --git a/testing/web-platform/tests/mixed-content/tentative/autoupgrades/audio-upgrade.https.sub.html b/testing/web-platform/tests/mixed-content/tentative/autoupgrades/audio-upgrade.https.sub.html
new file mode 100644
index 0000000000..4aeb183e3d
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/tentative/autoupgrades/audio-upgrade.https.sub.html
@@ -0,0 +1,40 @@
+<!DOCTYPE html>
+<html>
+<head>
+<title>Autoupgrade mixed content: Audio.</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/common/get-host-info.sub.js"></script>
+
+</head>
+<body>
+  <script>
+    async_test(t => assert_audio_loads(t), "Audio autoupgraded");
+
+    function assert_audio_loads(test) {
+        // Since autoupgrades don't upgrade custom ports, we use the https port with an HTTP scheme. A successful autoupgrade will result in the right URL loading (and no autoupgrade will result in failure).
+        var url = new URL("http://{{host}}:{{ports[https][0]}}/mixed-content/tentative/resources/test.wav")
+        var i = document.createElement('audio');
+        i.oncanplaythrough = test.step_func_done(_ => {
+            assert_equals(i.duration, 1, "Length");
+        });
+        i.onerror = test.unreached_func("Audio should load successfully from " + url);
+        i.src = url;
+    }
+    // Test the same just with another host
+    async_test(t => assert_other_host_audio_loads(t), "Audio of other host autoupgraded");
+
+    function assert_other_host_audio_loads(test) {
+    // Since autoupgrades don't upgrade custom ports, we use the https port with an HTTP scheme. A successful autoupgrade will result in the right URL loading (and no autoupgrade will result in failure).
+    var otherHost = get_host_info().HTTP_NOTSAMESITE_ORIGIN.slice(0,-4); // cut of http port
+    var url = new URL( otherHost + "{{ports[https][0]}}/mixed-content/tentative/resources/test.wav")
+    var i = document.createElement('audio');
+    i.oncanplaythrough = test.step_func_done(_ => {
+            assert_equals(i.duration, 1, "Length of other host audio is correct");
+    });
+    i.onerror = test.unreached_func("Audio of other host should load successfully from " + url);
+    i.src = url;
+    }
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/tentative/autoupgrades/image-upgrade.https.sub.html b/testing/web-platform/tests/mixed-content/tentative/autoupgrades/image-upgrade.https.sub.html
new file mode 100644
index 0000000000..d63a71026a
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/tentative/autoupgrades/image-upgrade.https.sub.html
@@ -0,0 +1,43 @@
+<!DOCTYPE html>
+<html>
+<head>
+<title>Autoupgrade mixed content: Optionally Blockable.</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/common/get-host-info.sub.js"></script>
+
+</head>
+<body>
+  <script>
+    async_test(t => assert_image_loads(t), "Image autoupgraded");
+
+    function assert_image_loads(test) {
+        // Since autoupgrades don't upgrade custom ports, we use the https port with an HTTP scheme. A successful autoupgrade will result in the right URL loading (and no autoupgrade will result in failure).
+        var url = new URL("http://{{host}}:{{ports[https][0]}}/mixed-content/tentative/resources/pass.png")
+        var i = document.createElement('img');
+        i.onload = test.step_func_done(_ => {
+            assert_equals(i.naturalHeight, 64, "Height.");
+            assert_equals(i.naturalWidth, 168, "Width.");
+        });
+        i.onerror = test.unreached_func("Image should load successfully from " + url);
+        i.src = url;
+    }
+
+     // Test the same just with another host
+     async_test(t => assert_other_host_image_loads(t), "Image of other host autoupgraded");
+
+    function assert_other_host_image_loads(test) {
+        // Since autoupgrades don't upgrade custom ports, we use the https port with an HTTP scheme. A successful autoupgrade will result in the right URL loading (and no autoupgrade will result in failure).
+        var otherHost = get_host_info().HTTP_NOTSAMESITE_ORIGIN.slice(0,-4); // cut of http port
+        var url = new URL( otherHost + "{{ports[https][0]}}/mixed-content/tentative/resources/pass.png")
+        var i = document.createElement('img');
+        i.onload = test.step_func_done(_ => {
+            assert_equals(i.naturalHeight, 64, "Height.");
+            assert_equals(i.naturalWidth, 168, "Width.");
+        });
+        i.onerror = test.unreached_func("image of other host should load successfully from " + url);
+        i.src = url;
+    }
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/tentative/autoupgrades/mixed-content-cors.https.sub.html b/testing/web-platform/tests/mixed-content/tentative/autoupgrades/mixed-content-cors.https.sub.html
new file mode 100644
index 0000000000..eb7b443df3
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/tentative/autoupgrades/mixed-content-cors.https.sub.html
@@ -0,0 +1,84 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>Test mixed content autoupgrade behavior for CORS request</title>
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/common/get-host-info.sub.js"></script>
+  </head>
+  <body>
+    <script>
+      // Test that request with CORS get upgraded for audio elements
+      async_test(
+        (t) => assert_other_host_audio_loads(t),
+        "Cross-Origin audio should get upgraded even if CORS is set"
+      );
+
+      function assert_other_host_audio_loads(test) {
+        // Since autoupgrades don't upgrade custom ports, we use the https port with an HTTP scheme. A successful autoupgrade will result in the right URL loading (and no autoupgrade will result in failure).
+        var otherHost = get_host_info().HTTP_NOTSAMESITE_ORIGIN.slice(0, -4); // cut of http port
+        var url =
+          otherHost +
+          "{{ports[https][0]}}/mixed-content/tentative/resources/test.wav?pipe=header(Access-Control-Allow-Origin,*)";
+        var i = document.createElement("audio");
+        i.oncanplaythrough = test.step_func_done((_) => {
+          assert_equals(i.duration, 1, "Length of other host audio is correct");
+        });
+        i.onerror = test.unreached_func(
+          "Audio of other host should load successfully from " + url
+        );
+        i.crossOrigin = "anonymous";
+        i.src = url;
+      }
+
+      // Test that request with CORS get upgraded for image elements
+      async_test(
+        (t) => assert_other_host_image_loads(t),
+        "Cross-Origin image should get upgraded even if CORS is set"
+      );
+
+      function assert_other_host_image_loads(test) {
+        // Since autoupgrades don't upgrade custom ports, we use the https port with an HTTP scheme. A successful autoupgrade will result in the right URL loading (and no autoupgrade will result in failure).
+        var otherHost = get_host_info().HTTP_NOTSAMESITE_ORIGIN.slice(0, -4); // cut of http port
+        var url = new URL(
+          otherHost +
+            "{{ports[https][0]}}/mixed-content/tentative/resources/pass.png?pipe=header(Access-Control-Allow-Origin,*)"
+        );
+        var i = document.createElement("img");
+        i.onload = test.step_func_done((_) => {
+          assert_equals(i.naturalHeight, 64, "Height.");
+          assert_equals(i.naturalWidth, 168, "Width.");
+        });
+        i.crossOrigin = "anonymous";
+        i.onerror = test.unreached_func(
+          "image of other host should load successfully from " + url
+        );
+        i.src = url;
+      }
+
+      // Test that request with CORS get upgraded for video elements
+      async_test(
+        (t) => assert_other_host_video_loads(t),
+        "Cross-Origin video should get upgraded even if CORS is set"
+      );
+
+      function assert_other_host_video_loads(test) {
+        // Since autoupgrades don't upgrade custom ports, we use the https port with an HTTP scheme. A successful autoupgrade will result in the right URL loading (and no autoupgrade will result in failure).
+        var otherHost = get_host_info().HTTP_NOTSAMESITE_ORIGIN.slice(0, -4); // cut of http port
+        var url = new URL(
+          otherHost +
+            "{{ports[https][0]}}/mixed-content/tentative/resources/test.ogv?pipe=header(Access-Control-Allow-Origin,*)"
+        );
+        var i = document.createElement("video");
+        i.oncanplaythrough = test.step_func_done((_) => {
+          assert_equals(Math.floor(i.duration), 300, "Length. Other host");
+        });
+        i.crossOrigin = "anonymous";
+        i.onerror = test.unreached_func(
+          "Video of other host should load successfully from " + url
+        );
+        i.src = url;
+      }
+    </script>
+  </body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/tentative/autoupgrades/video-upgrade.https.sub.html b/testing/web-platform/tests/mixed-content/tentative/autoupgrades/video-upgrade.https.sub.html
new file mode 100644
index 0000000000..ea2d07309c
--- /dev/null
+++ b/testing/web-platform/tests/mixed-content/tentative/autoupgrades/video-upgrade.https.sub.html
@@ -0,0 +1,41 @@
+<!DOCTYPE html>
+<html>
+<head>
+<title>Autoupgrade mixed content: Video.</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/common/get-host-info.sub.js"></script>
+
+</head>
+<body>
+  <script>
+    async_test(t => assert_video_loads(t), "Video autoupgraded");
+
+    function assert_video_loads(test) {
+        // Since autoupgrades don't upgrade custom ports, we use the https port with an HTTP scheme. A successful autoupgrade will result in the right URL loading (and no autoupgrade will result in failure).
+        var url = new URL("http://{{host}}:{{ports[https][0]}}/mixed-content/tentative/resources/test.ogv")
+        var i = document.createElement('video');
+        i.oncanplaythrough = test.step_func_done(_ => {
+            assert_equals(Math.floor(i.duration), 300, "Length.");
+        });
+        i.onerror = test.unreached_func("Video should load successfully from " + url);
+        i.src = url;
+    }
+
+    // Test the same just with another host
+    async_test(t => assert_other_host_video_loads(t), "Video of other host autoupgraded");
+
+    function assert_other_host_video_loads(test) {
+        // Since autoupgrades don't upgrade custom ports, we use the https port with an HTTP scheme. A successful autoupgrade will result in the right URL loading (and no autoupgrade will result in failure).
+        var otherHost = get_host_info().HTTP_NOTSAMESITE_ORIGIN.slice(0,-4); // cut of http port
+        var url = new URL( otherHost + "{{ports[https][0]}}/mixed-content/tentative/resources/test.ogv")
+        var i = document.createElement('video');
+        i.oncanplaythrough = test.step_func_done(_ => {
+            assert_equals(Math.floor(i.duration), 300, "Length. Other host");
+        });
+        i.onerror = test.unreached_func("Video of other host should load successfully from " + url);
+        i.src = url;
+    }
+</script>
+</body>
+</html>
diff --git a/testing/web-platform/tests/mixed-content/tentative/resources/pass.png b/testing/web-platform/tests/mixed-content/tentative/resources/pass.png
new file mode 100644
index 0000000000..2fa1e0ac06
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diff --git a/testing/web-platform/tests/mixed-content/tentative/resources/test.ogv b/testing/web-platform/tests/mixed-content/tentative/resources/test.ogv
new file mode 100644
index 0000000000..0f83996e5d
Binary files /dev/null and b/testing/web-platform/tests/mixed-content/tentative/resources/test.ogv differ
diff --git a/testing/web-platform/tests/mixed-content/tentative/resources/test.wav b/testing/web-platform/tests/mixed-content/tentative/resources/test.wav
new file mode 100644
index 0000000000..85dc1ea904
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