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>
---
 .../www/accessibility/test-aria-comboboxes.html    |  11 +++
 .../assets/www/accessibility/test-checkbox.html    |  12 +++
 .../assets/www/accessibility/test-clipboard.html   |   9 ++
 .../assets/www/accessibility/test-collection.html  |  21 ++++
 .../assets/www/accessibility/test-expandable.html  |  13 +++
 .../assets/www/accessibility/test-headings.html    |  11 +++
 .../assets/www/accessibility/test-links.html       |  12 +++
 .../www/accessibility/test-live-region-atomic.html |  12 +++
 .../accessibility/test-live-region-descendant.html |   9 ++
 .../test-live-region-image-labeled-by.html         |  15 +++
 .../www/accessibility/test-live-region-image.html  |  15 +++
 .../assets/www/accessibility/test-live-region.html |   9 ++
 .../www/accessibility/test-local-iframe.html       |  21 ++++
 .../test-move-caret-accessibility-focus.html       |   9 ++
 .../assets/www/accessibility/test-mutation.html    |   9 ++
 .../assets/www/accessibility/test-range.html       |  23 +++++
 .../www/accessibility/test-remote-iframe.html      |  24 +++++
 .../assets/www/accessibility/test-scroll.html      |  10 ++
 .../assets/www/accessibility/test-selectable.html  |  22 +++++
 .../www/accessibility/test-text-entry-node.html    |  11 +++
 .../assets/www/accessibility/test-tree.html        |  10 ++
 .../src/androidTest/assets/www/address_form.html   |  21 ++++
 .../src/androidTest/assets/www/audio/owl.mp3       | Bin 0 -> 67430 bytes
 .../src/androidTest/assets/www/autoplay.html       |  11 +++
 .../src/androidTest/assets/www/badVideoPath.html   |  11 +++
 .../src/androidTest/assets/www/beforeunload.html   |  15 +++
 .../src/androidTest/assets/www/cc_form.html        |  22 +++++
 .../src/androidTest/assets/www/clickToReload.html  |  10 ++
 .../src/androidTest/assets/www/clipboard_read.html |  22 +++++
 .../src/androidTest/assets/www/color_grid.html     |  40 ++++++++
 .../assets/www/color_orange_background.html        |  29 ++++++
 .../src/androidTest/assets/www/colors.html         |  23 +++++
 .../androidTest/assets/www/context_menu_audio.html |  20 ++++
 .../assets/www/context_menu_blob_buffered.html     |  44 +++++++++
 .../assets/www/context_menu_blob_full.html         |  22 +++++
 .../androidTest/assets/www/context_menu_image.html |  10 ++
 .../assets/www/context_menu_image_nested.html      |  14 +++
 .../androidTest/assets/www/context_menu_link.html  |  15 +++
 .../androidTest/assets/www/context_menu_video.html |  12 +++
 .../src/androidTest/assets/www/data_uri.html       |  14 +++
 .../src/androidTest/assets/www/download.html       |  18 ++++
 .../src/androidTest/assets/www/fixedbottom.html    |  36 +++++++
 .../src/androidTest/assets/www/fixedpercent.html   |  25 +++++
 .../src/androidTest/assets/www/fixedvh.html        |  25 +++++
 .../src/androidTest/assets/www/form_blank.html     |  20 ++++
 .../src/androidTest/assets/www/forms.html          |  34 +++++++
 .../src/androidTest/assets/www/forms2.html         |  17 ++++
 .../src/androidTest/assets/www/forms2_iframe.html  |  16 +++
 .../src/androidTest/assets/www/forms3.html         |  14 +++
 .../src/androidTest/assets/www/forms4.html         |  14 +++
 .../src/androidTest/assets/www/forms5.html         |  24 +++++
 .../androidTest/assets/www/forms_autocomplete.html |  16 +++
 .../assets/www/forms_autocomplete_iframe.html      |  15 +++
 .../src/androidTest/assets/www/forms_id_value.html |  12 +++
 .../src/androidTest/assets/www/forms_iframe.html   |  58 +++++++++++
 .../src/androidTest/assets/www/forms_xorigin.html  |  77 +++++++++++++++
 .../src/androidTest/assets/www/fullscreen.html     |   9 ++
 .../assets/www/getusermedia_xorigin_container.html |  58 +++++++++++
 .../assets/www/getusermedia_xorigin_iframe.html    |  39 ++++++++
 .../src/androidTest/assets/www/hello.html          |  10 ++
 .../src/androidTest/assets/www/hello2.html         |   9 ++
 .../src/androidTest/assets/www/helloPDFWorld.pdf   | Bin 0 -> 10414 bytes
 .../src/androidTest/assets/www/hsts_header.sjs     |   6 ++
 .../src/androidTest/assets/www/hungScript.html     |  16 +++
 .../iframe_100_percent_height_no_scrollable.html   |  60 ++++++++++++
 .../www/iframe_100_percent_height_scrollable.html  |  60 ++++++++++++
 .../assets/www/iframe_98vh_no_scrollable.html      |  55 +++++++++++
 .../assets/www/iframe_98vh_scrollable.html         |  55 +++++++++++
 .../src/androidTest/assets/www/iframe_hello.html   |  10 ++
 .../androidTest/assets/www/iframe_http_only.html   |  14 +++
 .../assets/www/iframe_redirect_automation.html     |  12 +++
 .../assets/www/iframe_redirect_local.html          |  10 ++
 .../assets/www/iframe_unknown_protocol.html        |  10 ++
 .../src/androidTest/assets/www/images/test.gif     | Bin 0 -> 23961 bytes
 .../src/androidTest/assets/www/inputs.html         |  66 +++++++++++++
 .../src/androidTest/assets/www/links.html          |  28 ++++++
 .../src/androidTest/assets/www/loremIpsum.html     |  17 ++++
 .../androidTest/assets/www/manifest.webmanifest    |  17 ++++
 .../assets/www/media_session_default1.html         |  15 +++
 .../androidTest/assets/www/media_session_dom1.html | 109 +++++++++++++++++++++
 .../src/androidTest/assets/www/metatags.html       |  19 ++++
 .../src/androidTest/assets/www/mouseToReload.html  |  10 ++
 .../geckoview/src/androidTest/assets/www/mp4.html  |  11 +++
 .../src/androidTest/assets/www/newSession.html     |  22 +++++
 .../androidTest/assets/www/newSession_child.html   |   9 ++
 .../androidTest/assets/www/no-meta-viewport.html   |   5 +
 .../geckoview/src/androidTest/assets/www/ogg.html  |  11 +++
 .../assets/www/overscroll-behavior-auto-none.html  |  28 ++++++
 .../assets/www/overscroll-behavior-auto.html       |  28 ++++++
 .../assets/www/overscroll-behavior-none-auto.html  |  28 ++++++
 .../www/overscroll-behavior-none-on-non-root.html  |  37 +++++++
 .../src/androidTest/assets/www/popup.html          |  12 +++
 .../assets/www/print_content_change.html           |  37 +++++++
 .../src/androidTest/assets/www/print_iframe.html   |  39 ++++++++
 .../src/androidTest/assets/www/prompts.html        |  31 ++++++
 .../src/androidTest/assets/www/push/push.html      |  10 ++
 .../src/androidTest/assets/www/push/push.js        |  44 +++++++++
 .../src/androidTest/assets/www/push/sw.js          |  30 ++++++
 ...ground-body-fully-covered-by-green-element.html |  23 +++++
 .../www/reflect_local_storage_into_title.html      |  17 ++++
 .../src/androidTest/assets/www/resubmit.html       |  12 +++
 .../assets/www/root_100_percent_height.html        |  37 +++++++
 .../src/androidTest/assets/www/root_100vh.html     |  36 +++++++
 .../src/androidTest/assets/www/root_98vh.html      |  36 +++++++
 .../src/androidTest/assets/www/saveState.html      |  18 ++++
 .../src/androidTest/assets/www/scroll-handoff.html |  35 +++++++
 .../src/androidTest/assets/www/scroll.html         |  59 +++++++++++
 .../src/androidTest/assets/www/select-listbox.html |   7 ++
 .../androidTest/assets/www/select-multiple.html    |   7 ++
 .../src/androidTest/assets/www/select.html         |   6 ++
 .../assets/www/selectionAction_frame.html          |   6 ++
 .../assets/www/selectionAction_frame_xorigin.html  |  41 ++++++++
 .../androidTest/assets/www/showDynamicToolbar.html |  96 ++++++++++++++++++
 .../src/androidTest/assets/www/simple_redirect.sjs |   4 +
 .../src/androidTest/assets/www/titleChange.html    |  16 +++
 .../assets/www/touch-action-wheel-listener.html    |  33 +++++++
 .../src/androidTest/assets/www/touch-action.html   |  48 +++++++++
 .../src/androidTest/assets/www/touch.html          |  58 +++++++++++
 .../src/androidTest/assets/www/touch_xorigin.html  |  16 +++
 .../src/androidTest/assets/www/touchstart.html     |  37 +++++++
 .../src/androidTest/assets/www/tracemonkey.pdf     | Bin 0 -> 178030 bytes
 .../src/androidTest/assets/www/trackers.html       |  14 +++
 .../src/androidTest/assets/www/transparent.gif     | Bin 0 -> 43 bytes
 .../androidTest/assets/www/update_manifest.json    |  40 ++++++++
 .../src/androidTest/assets/www/videos/gizmo.webm   | Bin 0 -> 159035 bytes
 .../src/androidTest/assets/www/videos/short.mp4    | Bin 0 -> 13651 bytes
 .../src/androidTest/assets/www/videos/video.ogg    | Bin 0 -> 285310 bytes
 .../src/androidTest/assets/www/viewport.html       |  19 ++++
 .../geckoview/src/androidTest/assets/www/webm.html |  11 +++
 .../androidTest/assets/www/worker/open_window.html |  10 ++
 .../androidTest/assets/www/worker/open_window.js   |  15 +++
 .../assets/www/worker/open_window_target.html      |   9 ++
 .../assets/www/worker/service-worker.js            |  15 +++
 133 files changed, 2941 insertions(+)
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-aria-comboboxes.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-checkbox.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-clipboard.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-collection.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-expandable.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-headings.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-links.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-live-region-atomic.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-live-region-descendant.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-live-region-image-labeled-by.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-live-region-image.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-live-region.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-local-iframe.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-move-caret-accessibility-focus.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-mutation.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-range.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-remote-iframe.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-scroll.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-selectable.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-text-entry-node.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-tree.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/address_form.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/audio/owl.mp3
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/autoplay.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/badVideoPath.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/beforeunload.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/cc_form.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/clickToReload.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/clipboard_read.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/color_grid.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/color_orange_background.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/colors.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/context_menu_audio.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/context_menu_blob_buffered.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/context_menu_blob_full.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/context_menu_image.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/context_menu_image_nested.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/context_menu_link.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/context_menu_video.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/data_uri.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/download.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/fixedbottom.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/fixedpercent.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/fixedvh.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/form_blank.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/forms.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/forms2.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/forms2_iframe.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/forms3.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/forms4.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/forms5.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/forms_autocomplete.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/forms_autocomplete_iframe.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/forms_id_value.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/forms_iframe.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/forms_xorigin.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/fullscreen.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/getusermedia_xorigin_container.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/getusermedia_xorigin_iframe.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/hello.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/hello2.html
 create mode 100755 mobile/android/geckoview/src/androidTest/assets/www/helloPDFWorld.pdf
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/hsts_header.sjs
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/hungScript.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/iframe_100_percent_height_no_scrollable.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/iframe_100_percent_height_scrollable.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/iframe_98vh_no_scrollable.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/iframe_98vh_scrollable.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/iframe_hello.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/iframe_http_only.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/iframe_redirect_automation.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/iframe_redirect_local.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/iframe_unknown_protocol.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/images/test.gif
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/inputs.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/links.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/loremIpsum.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/manifest.webmanifest
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/media_session_default1.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/media_session_dom1.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/metatags.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/mouseToReload.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/mp4.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/newSession.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/newSession_child.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/no-meta-viewport.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/ogg.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/overscroll-behavior-auto-none.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/overscroll-behavior-auto.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/overscroll-behavior-none-auto.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/overscroll-behavior-none-on-non-root.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/popup.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/print_content_change.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/print_iframe.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/prompts.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/push/push.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/push/push.js
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/push/sw.js
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/red-background-body-fully-covered-by-green-element.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/reflect_local_storage_into_title.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/resubmit.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/root_100_percent_height.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/root_100vh.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/root_98vh.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/saveState.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/scroll-handoff.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/scroll.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/select-listbox.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/select-multiple.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/select.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/selectionAction_frame.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/selectionAction_frame_xorigin.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/showDynamicToolbar.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/simple_redirect.sjs
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/titleChange.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/touch-action-wheel-listener.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/touch-action.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/touch.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/touch_xorigin.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/touchstart.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/tracemonkey.pdf
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/trackers.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/transparent.gif
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/update_manifest.json
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/videos/gizmo.webm
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/videos/short.mp4
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/videos/video.ogg
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/viewport.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/webm.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/worker/open_window.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/worker/open_window.js
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/worker/open_window_target.html
 create mode 100644 mobile/android/geckoview/src/androidTest/assets/www/worker/service-worker.js

(limited to 'mobile/android/geckoview/src/androidTest/assets/www')

diff --git a/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-aria-comboboxes.html b/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-aria-comboboxes.html
new file mode 100644
index 0000000000..8816879c1a
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-aria-comboboxes.html
@@ -0,0 +1,11 @@
+<html>
+  <head>
+    <meta charset="utf-8" />
+  </head>
+  <body>
+    <div contenteditable role="combobox" aria-label="ARIA 1.0 combobox"></div>
+    <div role="combobox">
+      <input type="text" aria-label="ARIA 1.1 combobox" />
+    </div>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-checkbox.html b/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-checkbox.html
new file mode 100644
index 0000000000..a45cfed92b
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-checkbox.html
@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8" />
+  </head>
+  <body>
+    <label>
+      <input type="checkbox" aria-describedby="desc" />many option
+    </label>
+    <div id="desc">description</div>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-clipboard.html b/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-clipboard.html
new file mode 100644
index 0000000000..c33b48f4e5
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-clipboard.html
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8" />
+  </head>
+  <body>
+    <input value="hello cruel world" id="input" />
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-collection.html b/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-collection.html
new file mode 100644
index 0000000000..865594ae5b
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-collection.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8" />
+  </head>
+  <body>
+    <ul>
+      <li>One</li>
+      <li><a href="#">Two</a></li>
+    </ul>
+    <ul>
+      <li>
+        1
+        <ul>
+          <li>1.1</li>
+          <li>1.2</li>
+        </ul>
+      </li>
+    </ul>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-expandable.html b/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-expandable.html
new file mode 100644
index 0000000000..8b416cf882
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-expandable.html
@@ -0,0 +1,13 @@
+<html>
+  <head>
+    <meta charset="utf-8" />
+  </head>
+  <body>
+    <button
+      onclick="this.setAttribute('aria-expanded', this.getAttribute('aria-expanded') == 'false')"
+      aria-expanded="false"
+    >
+      button
+    </button>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-headings.html b/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-headings.html
new file mode 100644
index 0000000000..280bbd89d7
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-headings.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html><html>
+<head>
+  <meta charset="utf-8">
+</head>
+<body>
+  <a href=\"%23\">preamble</a>
+  <h1>Fried cheese</h1><p>with club sauce.</p>
+  <a href="#"><h2>Popcorn shrimp</h2></a><button>with club sauce.</button>
+  <h3>Chicken fingers</h3><p>with spicy club sauce.</p>
+</body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-links.html b/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-links.html
new file mode 100644
index 0000000000..a108925dc1
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-links.html
@@ -0,0 +1,12 @@
+<html>
+  <head>
+    <meta charset="utf-8" />
+  </head>
+  <body>
+    <a href="/">a with href</a>
+    <a>a with no attributes</a>
+    <a name="anchor">a with name</a>
+    <a onclick=";">a with onclick</a>
+    <span role="link">span with role link</span>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-live-region-atomic.html b/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-live-region-atomic.html
new file mode 100644
index 0000000000..85f9f6ccd2
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-live-region-atomic.html
@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8" />
+  </head>
+  <body>
+    <div aria-live="polite" aria-atomic="true" id="container">
+      The time is
+      <p>3pm</p>
+    </div>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-live-region-descendant.html b/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-live-region-descendant.html
new file mode 100644
index 0000000000..82d88613f0
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-live-region-descendant.html
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8" />
+  </head>
+  <body>
+    <div aria-live="polite"><p id="to_show">I will be shown</p></div>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-live-region-image-labeled-by.html b/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-live-region-image-labeled-by.html
new file mode 100644
index 0000000000..5b91f1f6c2
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-live-region-image-labeled-by.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8" />
+  </head>
+  <body>
+    <img
+      src="data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw=="
+      aria-live="polite"
+      aria-labelledby="l1"
+    />
+    <span id="l1">Hello</span>
+    <span id="l2">Goodbye</span>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-live-region-image.html b/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-live-region-image.html
new file mode 100644
index 0000000000..da05b33c9a
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-live-region-image.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8" />
+  </head>
+  <body>
+    <div aria-live="polite" aria-atomic="true">
+      This picture is
+      <img
+        src="data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw=="
+        alt="happy"
+      />
+    </div>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-live-region.html b/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-live-region.html
new file mode 100644
index 0000000000..c73fb91966
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-live-region.html
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8" />
+  </head>
+  <body>
+    <div id="to_change" aria-live="polite"></div>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-local-iframe.html b/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-local-iframe.html
new file mode 100644
index 0000000000..0aff253395
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-local-iframe.html
@@ -0,0 +1,21 @@
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <style>
+      body {
+        margin: 0;
+        height: 100%;
+        display: flex;
+        flex-direction: column;
+      }
+      iframe {
+        height: 100%;
+      }
+    </style>
+  </head>
+  <body>
+    Some stuff
+    <iframe src="../hello.html" id="iframe"></iframe>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-move-caret-accessibility-focus.html b/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-move-caret-accessibility-focus.html
new file mode 100644
index 0000000000..d9d1597991
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-move-caret-accessibility-focus.html
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8" />
+  </head>
+  <body>
+    <p>Hello <a href="foo">sweet</a>, sweet <span>world</span></p>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-mutation.html b/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-mutation.html
new file mode 100644
index 0000000000..5c9c68aca0
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-mutation.html
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8" />
+  </head>
+  <body>
+    <div><p id="to_show">I will be shown</p></div>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-range.html b/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-range.html
new file mode 100644
index 0000000000..70ef76e624
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-range.html
@@ -0,0 +1,23 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8" />
+  </head>
+  <body>
+    <input type="range" aria-label="Rating" min="1" max="10" value="4" /><input
+      type="range"
+      aria-label="Stars"
+      min="1"
+      max="5"
+      step="0.5"
+      value="4.5"
+    /><input
+      type="range"
+      aria-label="Percent"
+      min="0"
+      max="1"
+      step="0.01"
+      value="0.83"
+    />
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-remote-iframe.html b/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-remote-iframe.html
new file mode 100644
index 0000000000..7e3e5da1ca
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-remote-iframe.html
@@ -0,0 +1,24 @@
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <style>
+      body {
+        margin: 0;
+        height: 100%;
+        display: flex;
+        flex-direction: column;
+      }
+      iframe {
+        height: 100%;
+      }
+    </style>
+  </head>
+  <body>
+    Some stuff
+    <iframe
+      src="https://example.org/tests/junit/hello.html"
+      id="iframe"
+    ></iframe>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-scroll.html b/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-scroll.html
new file mode 100644
index 0000000000..912aab9143
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-scroll.html
@@ -0,0 +1,10 @@
+<meta charset="utf-8" />
+<meta name="viewport" content="width=device-width initial-scale=1" />
+<body style="margin: 0">
+  <div style="height: 100vh"></div>
+  <button>Hello</button>
+  <p style="margin: 0">
+    Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod
+    tempor incididunt ut labore et dolore magna aliqua.
+  </p>
+</body>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-selectable.html b/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-selectable.html
new file mode 100644
index 0000000000..f30951ff83
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-selectable.html
@@ -0,0 +1,22 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8" />
+  </head>
+  <body>
+    <ul style="list-style-type: none" role="listbox">
+      <li
+        id="li"
+        role="option"
+        onclick="this.setAttribute('aria-selected',
+          this.getAttribute('aria-selected') == 'true' ? 'false' : 'true')"
+      >
+        1
+      </li>
+      <li role="option" aria-selected="false">2</li>
+    </ul>
+    <li id="outsideSelectable" role="option" tabindex="0">
+      outside selectable
+    </li>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-text-entry-node.html b/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-text-entry-node.html
new file mode 100644
index 0000000000..002efc9f14
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-text-entry-node.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8" />
+  </head>
+  <body>
+    <input aria-label="Name" aria-describedby="desc" value="Tobias" />
+    <div id="desc">description</div>
+    <input aria-label="Last" value="Funke" required />
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-tree.html b/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-tree.html
new file mode 100644
index 0000000000..81ab105c7d
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/accessibility/test-tree.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8" />
+  </head>
+  <body>
+    <label for="name">Name:</label
+    ><input id="name" type="text" value="Julie" /><button>Submit</button>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/address_form.html b/mobile/android/geckoview/src/androidTest/assets/www/address_form.html
new file mode 100644
index 0000000000..d247c5ce79
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/address_form.html
@@ -0,0 +1,21 @@
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <title>Address form</title>
+  </head>
+  <body>
+    <form>
+      <input autocomplete="name" id="name" />
+      <input autocomplete="given-name" id="givenName" />
+      <input autocomplete="additional-name" id="additionalName" />
+      <input autocomplete="family-name" id="familyName" />
+      <input autocomplete="street-address" id="streetAddress" />
+      <input autocomplete="country" id="country" />
+      <input autocomplete="postal-code" id="postalCode" />
+      <input autocomplete="organization" id="organization" />
+      <input autocomplete="email" id="email" />
+      <input autocomplete="tel" id="tel" />
+      <input type="submit" value="Submit" />
+    </form>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/audio/owl.mp3 b/mobile/android/geckoview/src/androidTest/assets/www/audio/owl.mp3
new file mode 100644
index 0000000000..9fafa32f93
Binary files /dev/null and b/mobile/android/geckoview/src/androidTest/assets/www/audio/owl.mp3 differ
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/autoplay.html b/mobile/android/geckoview/src/androidTest/assets/www/autoplay.html
new file mode 100644
index 0000000000..24cbf474bd
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/autoplay.html
@@ -0,0 +1,11 @@
+<html>
+    <head>
+        <meta charset="utf-8">
+        <title>WEBM Video</title>
+    </head>
+    <body>
+        <video preload autoplay>
+            <source src="videos/gizmo.webm"></source>
+        </video>
+    </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/badVideoPath.html b/mobile/android/geckoview/src/androidTest/assets/www/badVideoPath.html
new file mode 100644
index 0000000000..d9b34843fd
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/badVideoPath.html
@@ -0,0 +1,11 @@
+<html>
+    <head>
+        <meta charset="utf-8">
+        <title>Bad Video Path</title>
+    </head>
+    <body>
+        <video controls preload>
+            <source src="videos/fileDoesNotExist.ogg"></source>
+        </video>
+    </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/beforeunload.html b/mobile/android/geckoview/src/androidTest/assets/www/beforeunload.html
new file mode 100644
index 0000000000..d521afe532
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/beforeunload.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8" />
+  </head>
+  <body onbeforeunload="return beforeUnload()">
+    <a id="navigateAway" href="./hello.html">Click Me</a>
+    <a id="navigateAway2" href="./hello2.html">Click Me</a>
+    <script>
+      function beforeUnload() {
+        return "Please don't leave.";
+      }
+    </script>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/cc_form.html b/mobile/android/geckoview/src/androidTest/assets/www/cc_form.html
new file mode 100644
index 0000000000..7b3ea2a1bb
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/cc_form.html
@@ -0,0 +1,22 @@
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <title>Form Autofill Test: Credit Card</title>
+  </head>
+  <body>
+    <form id="form1">
+      <input autocomplete="cc-name" id="name" />
+      <input autocomplete="cc-number" id="number" />
+      <input autocomplete="cc-exp-month" id="expMonth" />
+      <input autocomplete="cc-exp-year" id="expYear" />
+      <input type="submit" value="Submit" />
+    </form>
+    <!-- form2 uses a single expiration date field -->
+    <form id="form2">
+      <input autocomplete="cc-name" id="name" />
+      <input autocomplete="cc-number" id="number" />
+      <input autocomplete="cc-exp" id="exp" />
+      <input type="submit" value="Submit" />
+    </form>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/clickToReload.html b/mobile/android/geckoview/src/androidTest/assets/www/clickToReload.html
new file mode 100644
index 0000000000..47bdceccee
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/clickToReload.html
@@ -0,0 +1,10 @@
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <title>Hello, world!</title>
+    <meta name="viewport" content="initial-scale=1.0" />
+  </head>
+  <body style="height: 100%" onclick="window.location.reload()">
+    <p>Hello, world!</p>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/clipboard_read.html b/mobile/android/geckoview/src/androidTest/assets/www/clipboard_read.html
new file mode 100644
index 0000000000..19a034a23d
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/clipboard_read.html
@@ -0,0 +1,22 @@
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <title>Hello, world!</title>
+    <meta name="viewport" content="initial-scale=1.0" />
+  </head>
+  <body style="height: 100%">
+    <p>Hello, world!</p>
+    <script>
+      document.body.addEventListener("click", () => {
+        navigator.clipboard
+          .readText()
+          .then(() => {
+            window.alert("allow");
+          })
+          .catch(() => {
+            window.alert("deny");
+          });
+      });
+    </script>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/color_grid.html b/mobile/android/geckoview/src/androidTest/assets/www/color_grid.html
new file mode 100644
index 0000000000..ebc989acdb
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/color_grid.html
@@ -0,0 +1,40 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8" content="width=device-width, height=device-height" />
+    <title>Color Grid</title>
+  </head>
+  <style>
+    body {
+      margin: 0;
+    }
+    .container {
+      display: grid;
+      grid-template-columns: 1fr 1fr 1fr;
+    }
+    .box {
+      height: 100vh;
+      width: 33.33vw;
+    }
+    .red {
+      background-color: rgb(255, 0, 0);
+      color-adjust: exact;
+    }
+    .green {
+      background-color: rgb(0, 255, 0);
+      color-adjust: exact;
+    }
+    .blue {
+      background-color: rgb(0, 0, 255);
+      color-adjust: exact;
+    }
+  </style>
+
+  <body>
+    <div class="container">
+      <div class="red box"></div>
+      <div class="green box"></div>
+      <div class="blue box"></div>
+    </div>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/color_orange_background.html b/mobile/android/geckoview/src/androidTest/assets/www/color_orange_background.html
new file mode 100644
index 0000000000..8a682d79a7
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/color_orange_background.html
@@ -0,0 +1,29 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8" content="width=device-width, height=device-height" />
+    <title>Orange Print Background</title>
+  </head>
+  <style>
+    .box {
+      height: 100vh;
+      width: 100vw;
+    }
+    @media screen {
+      .background {
+        background-color: rgb(0, 0, 255);
+        color-adjust: exact;
+      }
+    }
+    @media print {
+      .background {
+        background-color: rgb(255, 113, 57);
+        color-adjust: exact;
+      }
+    }
+  </style>
+
+  <body>
+    <div class="box background"></div>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/colors.html b/mobile/android/geckoview/src/androidTest/assets/www/colors.html
new file mode 100644
index 0000000000..b00da3ed9c
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/colors.html
@@ -0,0 +1,23 @@
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <title>Colours</title>
+  </head>
+  <!-- background contains one extra transparent.gif because we want trick the
+      contentful paint detection; We want to make sure the background is loaded
+      before the test starts so we always wait for the contentful paint timestamp
+      to exist, however, gradient isn't considered as contentful per spec, so Gecko
+      wouldn't generate a timestamp for it. Hence, we added a transparent gif
+      to the image list to trick the detection. !-->
+  <body
+    style="
+      overflow: hidden;
+      height: 100%;
+      width: 100%;
+      margin: 0px;
+      padding: 0px;
+      background: url('/assets/www/transparent.gif'),
+        linear-gradient(135deg, red, white);
+    "
+  ></body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/context_menu_audio.html b/mobile/android/geckoview/src/androidTest/assets/www/context_menu_audio.html
new file mode 100644
index 0000000000..b26323a13e
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/context_menu_audio.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8" content="width=device-width, height=device-height" />
+    <title>Context Menu Test Audio</title>
+  </head>
+  <style>
+    body {
+      margin: 0;
+    }
+  </style>
+  <body>
+    <div class="center-audio">
+      <audio controls src="audio/owl.mp3">
+        Your browser does not support the
+        <code>audio</code> element.
+      </audio>
+    </div>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/context_menu_blob_buffered.html b/mobile/android/geckoview/src/androidTest/assets/www/context_menu_blob_buffered.html
new file mode 100644
index 0000000000..9849747a41
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/context_menu_blob_buffered.html
@@ -0,0 +1,44 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8" content="width=device-width, height=device-height" />
+    <title>Context Menu Test Blob Buffered</title>
+  </head>
+  <body>
+    <video id="video" controls preload></video>
+  </body>
+  <script>
+    window.addEventListener("DOMContentLoaded", function (e) {
+      const video = document.getElementById("video");
+      const mediaSource = new MediaSource();
+      video.src = URL.createObjectURL(mediaSource);
+      mediaSource.addEventListener("sourceopen", createBuffer);
+
+      function createBuffer(event) {
+        const mediaSource = event.target;
+        const assetURL = "/assets/www/videos/gizmo.webm";
+        const codec = 'video/webm; codecs="opus"';
+        const sourceBuffer = mediaSource.addSourceBuffer(codec);
+
+        function addBuffer(response) {
+          sourceBuffer.addEventListener("updateend", function () {
+            mediaSource.endOfStream();
+          });
+          sourceBuffer.appendBuffer(response);
+        }
+
+        fetchVideoData(assetURL, addBuffer);
+      }
+
+      function fetchVideoData(assetURL, videoArrayBuffer) {
+        const request = new XMLHttpRequest();
+        request.open("get", assetURL);
+        request.responseType = "arraybuffer";
+        request.onload = function () {
+          videoArrayBuffer(request.response);
+        };
+        request.send();
+      }
+    });
+  </script>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/context_menu_blob_full.html b/mobile/android/geckoview/src/androidTest/assets/www/context_menu_blob_full.html
new file mode 100644
index 0000000000..5ebc2bddba
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/context_menu_blob_full.html
@@ -0,0 +1,22 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8" content="width=device-width, height=device-height" />
+    <title>Context Menu Test Blob</title>
+  </head>
+  <body>
+    <div id="image_container"></div>
+  </body>
+  <script>
+    window.addEventListener("DOMContentLoaded", function (e) {
+      const svg = `<svg viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg">
+                            <circle cx="50" cy="50" r="50" stroke="orange" fill="transparent" stroke-width="5"/>
+                         </svg>`;
+      const image = document.createElement("img");
+      const blob = new Blob([svg], { type: "image/svg+xml" });
+      image.src = URL.createObjectURL(blob);
+      image.alt = "An orange circle.";
+      document.getElementById("image_container").appendChild(image);
+    });
+  </script>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/context_menu_image.html b/mobile/android/geckoview/src/androidTest/assets/www/context_menu_image.html
new file mode 100644
index 0000000000..9564f94628
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/context_menu_image.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8" content="width=device-width, height=device-height" />
+    <title>Context Menu Test Image</title>
+  </head>
+  <body>
+    <img id="image" src="images/test.gif" alt="Test Image" />
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/context_menu_image_nested.html b/mobile/android/geckoview/src/androidTest/assets/www/context_menu_image_nested.html
new file mode 100644
index 0000000000..99563d66f5
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/context_menu_image_nested.html
@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8" content="width=device-width, height=device-height" />
+    <title>Context Menu Test Nested Image</title>
+  </head>
+  <body>
+    <div>
+      <div>
+        <img id="image" src="images/test.gif" alt="Test Image" />
+      </div>
+    </div>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/context_menu_link.html b/mobile/android/geckoview/src/androidTest/assets/www/context_menu_link.html
new file mode 100644
index 0000000000..e5b0d0d316
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/context_menu_link.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8" content="width=device-width, height=device-height" />
+    <title>Context Menu Test Link</title>
+  </head>
+  <style>
+    #hello {
+      font-size: 20vw;
+    }
+  </style>
+  <body>
+    <a href="hello.html" title="Hello Link Title" id="hello">Hello World</a>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/context_menu_video.html b/mobile/android/geckoview/src/androidTest/assets/www/context_menu_video.html
new file mode 100644
index 0000000000..bca8e46afe
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/context_menu_video.html
@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<html>
+    <head>
+        <meta charset="utf-8" content="width=device-width, height=device-height">
+        <title>Context Menu Test Video</title>
+    </head>
+    <body>
+        <video controls preload>
+            <source src="videos/short.mp4"></source>
+        </video>
+    </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/data_uri.html b/mobile/android/geckoview/src/androidTest/assets/www/data_uri.html
new file mode 100644
index 0000000000..638e4c754c
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/data_uri.html
@@ -0,0 +1,14 @@
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <title>Link with a giant data URI</title>
+  </head>
+  <body>
+    <a href="insert uri here" id="smallLink">Open small link</a>
+    <a href="insert uri here" id="largeLink">Open large link</a>
+    <img src="/assets/www/images/test.gif" id="image" />
+    <script language="JavaScript">
+      var imageLoaded = false;
+    </script>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/download.html b/mobile/android/geckoview/src/androidTest/assets/www/download.html
new file mode 100644
index 0000000000..4f06323dc6
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/download.html
@@ -0,0 +1,18 @@
+<html>
+  <head>
+    <meta charset="utf-8" />
+  </head>
+  <body>
+    <script>
+      const blob = new Blob(["Downloaded Data"], { type: "text/plain" });
+      const element = document.createElement("a");
+      const uri = URL.createObjectURL(blob);
+      element.href = uri;
+      element.download = "download.txt";
+      element.style.display = "none";
+      document.body.appendChild(element);
+      element.click();
+      URL.revokeObjectURL(uri);
+    </script>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/fixedbottom.html b/mobile/android/geckoview/src/androidTest/assets/www/fixedbottom.html
new file mode 100644
index 0000000000..b802bb335b
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/fixedbottom.html
@@ -0,0 +1,36 @@
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1" />
+    <title>Fixed bottom element</title>
+  </head>
+  <!-- background contains one extra transparent.gif because we want trick the
+      contentful paint detection; We want to make sure the background is loaded
+      before the test starts so we always wait for the contentful paint timestamp
+      to exist, however, gradient isn't considered as contentful per spec, so Gecko
+      wouldn't generate a timestamp for it. Hence, we added a transparent gif
+      to the image list to trick the detection. !-->
+  <body
+    style="
+      overflow: hidden;
+      height: 100%;
+      width: 100%;
+      margin: 0px;
+      padding: 0px;
+      background: url('/assets/www/transparent.gif'),
+        linear-gradient(135deg, blue, blue);
+    "
+  >
+    <div
+      id="bottom-banner"
+      style="
+        width: 100%;
+        position: fixed;
+        bottom: 0;
+        left: 0;
+        background-color: lime;
+        height: 10%;
+      "
+    ></div>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/fixedpercent.html b/mobile/android/geckoview/src/androidTest/assets/www/fixedpercent.html
new file mode 100644
index 0000000000..587df00473
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/fixedpercent.html
@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<meta charset="utf-8" />
+<meta name="viewport" content="width=device-width, minimum-scale=0.5" />
+<style>
+  html {
+    width: 100%;
+    height: 100%;
+    scrollbar-width: none;
+  }
+  body {
+    width: 200%;
+    height: 2000px;
+    margin: 0;
+    padding: 0;
+  }
+
+  #fixed-element {
+    width: 100%;
+    height: 200%;
+    position: fixed;
+    top: 0px;
+    background-color: green;
+  }
+</style>
+<div id="fixed-element"></div>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/fixedvh.html b/mobile/android/geckoview/src/androidTest/assets/www/fixedvh.html
new file mode 100644
index 0000000000..fd6661c2cd
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/fixedvh.html
@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<meta charset="utf-8" />
+<meta name="viewport" content="width=device-width, minimum-scale=0.5" />
+<style>
+  html {
+    width: 100%;
+    height: 100%;
+    scrollbar-width: none;
+  }
+  body {
+    width: 200%;
+    height: 2000px;
+    margin: 0;
+    padding: 0;
+  }
+
+  #fixed-element {
+    width: 100%;
+    height: 200vh;
+    position: fixed;
+    top: 0px;
+    background-color: green;
+  }
+</style>
+<div id="fixed-element"></div>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/form_blank.html b/mobile/android/geckoview/src/androidTest/assets/www/form_blank.html
new file mode 100644
index 0000000000..918cc4cb7a
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/form_blank.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <title>Forms</title>
+    <meta name="viewport" content="minimum-scale=1,width=device-width" />
+  </head>
+  <body>
+    <form
+      id="form1"
+      name="form1"
+      action="form_blank.html"
+      method="get"
+      target="_blank"
+    >
+      <input type="text" id="search" value="foo" />
+      <input type="submit" />
+    </form>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/forms.html b/mobile/android/geckoview/src/androidTest/assets/www/forms.html
new file mode 100644
index 0000000000..06c2ed64db
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/forms.html
@@ -0,0 +1,34 @@
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <title>Forms</title>
+    <meta name="viewport" content="minimum-scale=1,width=device-width" />
+  </head>
+  <body>
+    <form id="form1">
+      <input type="text" id="user1" value="foo" />
+      <input type="password" id="pass1" value="foo" />
+      <input type="email" id="email1" value="@" />
+      <input type="number" id="number1" value="0" />
+      <input type="tel" id="tel1" value="0" />
+      <input type="submit" value="submit" />
+    </form>
+    <input type="Text" id="user2" value="foo" />
+    <input type="PassWord" id="pass2" maxlength="8" value="foo" />
+    <input type="button" id="button1" value="foo" />
+    <input type="checkbox" id="checkbox1" />
+    <input type="search" id="search1" />
+    <input type="url" id="url1" />
+    <input type="hidden" id="hidden1" value="foo" />
+
+    <iframe id="iframe"></iframe>
+  </body>
+  <script>
+    addEventListener("load", function (e) {
+      if (window.parent === window) {
+        document.getElementById("iframe").contentWindow.location.href =
+          window.location.href;
+      }
+    });
+  </script>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/forms2.html b/mobile/android/geckoview/src/androidTest/assets/www/forms2.html
new file mode 100644
index 0000000000..06ab5ec448
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/forms2.html
@@ -0,0 +1,17 @@
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <title>Forms2</title>
+  </head>
+  <body>
+    <form>
+      <fieldset>
+        <input type="text" id="firstname" />
+        <input type="text" id="lastname" />
+        <input type="text" id="user1" value="foo" />
+        <input type="password" id="pass1" value="foo" autofocus />
+      </fieldset>
+    </form>
+    <iframe id="iframe" src="forms2_iframe.html"></iframe>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/forms2_iframe.html b/mobile/android/geckoview/src/androidTest/assets/www/forms2_iframe.html
new file mode 100644
index 0000000000..849fa43271
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/forms2_iframe.html
@@ -0,0 +1,16 @@
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <title>Forms2 iframe</title>
+  </head>
+  <body>
+    <form>
+      <fieldset>
+        <input type="text" id="firstname" />
+        <input type="text" id="lastname" />
+        <input type="text" id="user1" value="foo" />
+        <input type="password" id="pass1" value="foo" autofocus />
+      </fieldset>
+    </form>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/forms3.html b/mobile/android/geckoview/src/androidTest/assets/www/forms3.html
new file mode 100644
index 0000000000..91bceb3943
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/forms3.html
@@ -0,0 +1,14 @@
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <title>Forms</title>
+    <meta name="viewport" content="minimum-scale=1,width=device-width" />
+  </head>
+  <body>
+    <form id="form1">
+      <input type="text" id="user1" placeholder="username" />
+      <input type="password" id="pass1" placeholder="password" />
+      <input type="submit" value="submit" />
+    </form>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/forms4.html b/mobile/android/geckoview/src/androidTest/assets/www/forms4.html
new file mode 100644
index 0000000000..3650635396
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/forms4.html
@@ -0,0 +1,14 @@
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <title>Forms</title>
+    <meta name="viewport" content="minimum-scale=1,width=device-width" />
+  </head>
+  <body>
+    <form id="form1">
+      <input type="text" id="user1" />
+      <input type="password" id="pass1" autocomplete="new-password" />
+      <input type="submit" value="submit" />
+    </form>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/forms5.html b/mobile/android/geckoview/src/androidTest/assets/www/forms5.html
new file mode 100644
index 0000000000..b9da67f343
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/forms5.html
@@ -0,0 +1,24 @@
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <title>Forms</title>
+    <meta name="viewport" content="minimum-scale=1,width=device-width" />
+  </head>
+  <body>
+    <form id="form1">
+      <input type="text" id="user1" value="foo" />
+      <input type="password" id="pass1" value="foo" />
+      <input type="email" id="email1" value="@" />
+      <input type="number" id="number1" value="0" />
+      <input type="tel" id="tel1" value="0" />
+      <input type="submit" value="submit" />
+    </form>
+    <input type="Text" id="user2" value="foo" />
+    <input type="PassWord" id="pass2" maxlength="8" value="foo" />
+    <input type="button" id="button1" value="foo" />
+    <input type="checkbox" id="checkbox1" />
+    <input type="search" id="search1" />
+    <input type="url" id="url1" />
+    <input type="hidden" id="hidden1" value="foo" />
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/forms_autocomplete.html b/mobile/android/geckoview/src/androidTest/assets/www/forms_autocomplete.html
new file mode 100644
index 0000000000..81401a1d27
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/forms_autocomplete.html
@@ -0,0 +1,16 @@
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <title>Forms</title>
+    <meta name="viewport" content="minimum-scale=1,width=device-width" />
+  </head>
+  <body>
+    <form>
+      <input type="text" autocomplete="email" autofocus />
+      <input type="text" autocomplete="username" />
+      <input type="password" />
+      <input type="submit" value="submit" />
+    </form>
+    <iframe id="iframe" src="forms_autocomplete_iframe.html"></iframe>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/forms_autocomplete_iframe.html b/mobile/android/geckoview/src/androidTest/assets/www/forms_autocomplete_iframe.html
new file mode 100644
index 0000000000..11137531ba
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/forms_autocomplete_iframe.html
@@ -0,0 +1,15 @@
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <title>Forms</title>
+    <meta name="viewport" content="minimum-scale=1,width=device-width" />
+  </head>
+  <body>
+    <form>
+      <input type="text" autocomplete="email" autofocus />
+      <input type="text" autocomplete="username" />
+      <input type="password" />
+      <input type="submit" value="submit" />
+    </form>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/forms_id_value.html b/mobile/android/geckoview/src/androidTest/assets/www/forms_id_value.html
new file mode 100644
index 0000000000..522dbc1600
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/forms_id_value.html
@@ -0,0 +1,12 @@
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <title>Forms ID Value</title>
+    <meta name="viewport" content="minimum-scale=1,width=device-width" />
+  </head>
+  <body>
+    <form id="form1">
+      <input type="password" id="value" />
+    </form>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/forms_iframe.html b/mobile/android/geckoview/src/androidTest/assets/www/forms_iframe.html
new file mode 100644
index 0000000000..2c0ef7dff5
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/forms_iframe.html
@@ -0,0 +1,58 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <title>Forms iframe</title>
+    <meta name="viewport" content="minimum-scale=1,width=device-width" />
+  </head>
+  <body>
+    <form id="form1">
+      <input type="text" id="user1" value="foo" />
+      <input type="password" id="pass1" value="foo" />
+      <input type="email" id="email1" value="@" />
+      <input type="number" id="number1" value="0" />
+      <input type="tel" id="tel1" value="0" />
+      <input type="submit" value="submit" />
+    </form>
+    <input type="Text" id="user2" value="foo" />
+    <input type="PassWord" id="pass2" maxlength="8" value="foo" />
+    <input type="button" id="button1" value="foo" />
+    <input type="checkbox" id="checkbox1" />
+    <input type="search" id="search1" />
+    <input type="url" id="url1" />
+    <input type="hidden" id="hidden1" value="foo" />
+  </body>
+  <script>
+    const params = new URL(document.location).searchParams;
+
+    function getEventInterface(event) {
+      if (event instanceof document.defaultView.InputEvent) {
+        return "InputEvent";
+      }
+      if (event instanceof document.defaultView.UIEvent) {
+        return "UIEvent";
+      }
+      if (event instanceof document.defaultView.Event) {
+        return "Event";
+      }
+      return "Unknown";
+    }
+
+    function getData(key, value) {
+      return new Promise(resolve =>
+        document.querySelector(key).addEventListener(
+          "input",
+          event => {
+            resolve([key, event.target.value, value, getEventInterface(event)]);
+          },
+          { once: true }
+        )
+      );
+    }
+
+    window.addEventListener("message", async event => {
+      const { data, source, origin } = event;
+      source.postMessage(await getData(data.key, data.value), origin);
+    });
+  </script>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/forms_xorigin.html b/mobile/android/geckoview/src/androidTest/assets/www/forms_xorigin.html
new file mode 100644
index 0000000000..ebd86c59a1
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/forms_xorigin.html
@@ -0,0 +1,77 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <title>Forms</title>
+    <meta name="viewport" content="minimum-scale=1,width=device-width" />
+  </head>
+  <body>
+    <form id="form1">
+      <input type="text" id="user1" value="foo" />
+      <input type="password" id="pass1" value="foo" />
+      <input type="email" id="email1" value="@" />
+      <input type="number" id="number1" value="0" />
+      <input type="tel" id="tel1" value="0" />
+      <input type="submit" value="submit" />
+    </form>
+    <input type="Text" id="user2" value="foo" />
+    <input type="PassWord" id="pass2" maxlength="8" value="foo" />
+    <input type="button" id="button1" value="foo" />
+    <input type="checkbox" id="checkbox1" />
+    <input type="search" id="search1" />
+    <input type="url" id="url1" />
+    <input type="hidden" id="hidden1" value="foo" />
+
+    <iframe
+      id="iframe"
+      src="http://example.org/tests/junit/forms_iframe.html"
+    ></iframe>
+  </body>
+  <script>
+    const params = new URL(document.location).searchParams;
+    const iframe = document.getElementById("iframe").contentWindow;
+
+    function getEventInterface(event) {
+      if (event instanceof document.defaultView.InputEvent) {
+        return "InputEvent";
+      }
+      if (event instanceof document.defaultView.UIEvent) {
+        return "UIEvent";
+      }
+      if (event instanceof document.defaultView.Event) {
+        return "Event";
+      }
+      return "Unknown";
+    }
+
+    function getData(key, value) {
+      return new Promise(resolve =>
+        document.querySelector(key).addEventListener(
+          "input",
+          event => {
+            resolve([key, event.target.value, value, getEventInterface(event)]);
+          },
+          { once: true }
+        )
+      );
+    }
+
+    window.getDataForAllFrames = function (key, value) {
+      const data = [];
+      data.push(
+        new Promise(resolve =>
+          window.addEventListener(
+            "message",
+            event => {
+              resolve(event.data);
+            },
+            { once: true }
+          )
+        )
+      );
+      iframe.postMessage({ key, value }, "*");
+      data.push(getData(key, value));
+      return Promise.all(data);
+    };
+  </script>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/fullscreen.html b/mobile/android/geckoview/src/androidTest/assets/www/fullscreen.html
new file mode 100644
index 0000000000..f7d4feb3a4
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/fullscreen.html
@@ -0,0 +1,9 @@
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <title>Fullscreen</title>
+  </head>
+  <body>
+    <div id="fullscreen">Fullscreen Div</div>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/getusermedia_xorigin_container.html b/mobile/android/geckoview/src/androidTest/assets/www/getusermedia_xorigin_container.html
new file mode 100644
index 0000000000..2ba4a89b54
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/getusermedia_xorigin_container.html
@@ -0,0 +1,58 @@
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <title>GetUserMedia from cross-origin iframe: the container document</title>
+  </head>
+  <body>
+    <iframe
+      id="iframe_no_allow"
+      src="http://127.0.0.1:4245/assets/www/getusermedia_xorigin_iframe.html"
+    ></iframe>
+    <iframe
+      id="iframe"
+      allow="camera;microphone"
+      src="http://127.0.0.1:4245/assets/www/getusermedia_xorigin_iframe.html"
+    ></iframe>
+    <script>
+      "use strict";
+
+      let iframeWindow;
+      let generation = 1;
+
+      async function Send(obj) {
+        obj.gen = generation++;
+        iframeWindow.postMessage(obj, "http://127.0.0.1:4245");
+        while (true) {
+          const {
+            data: { gen, result },
+          } = await new Promise(r => (window.onmessage = r));
+          if (gen == obj.gen) {
+            return result;
+          }
+        }
+      }
+
+      function Start(constraints) {
+        if (iframeWindow) {
+          return "iframe mode already decided";
+        }
+        iframeWindow = document.getElementById("iframe").contentWindow;
+        return Send({ name: "start", constraints });
+      }
+
+      function StartNoAllow(constraints) {
+        if (iframeWindow) {
+          return "iframe mode already decided";
+        }
+        iframeWindow = document.getElementById("iframe_no_allow").contentWindow;
+        return Send({ name: "start", constraints });
+      }
+
+      async function Stop() {
+        const result = await Send({ name: "stop" });
+        iframeWindow = undefined;
+        return result;
+      }
+    </script>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/getusermedia_xorigin_iframe.html b/mobile/android/geckoview/src/androidTest/assets/www/getusermedia_xorigin_iframe.html
new file mode 100644
index 0000000000..3649167c25
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/getusermedia_xorigin_iframe.html
@@ -0,0 +1,39 @@
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <title>GetUserMedia from cross-origin iframe: the iframe document</title>
+  </head>
+  <body>
+    <script>
+      "use strict";
+
+      let stream;
+      window.addEventListener(
+        "message",
+        async ({ data: { name, gen, constraints } }) => {
+          if (name == "start") {
+            try {
+              stream = await navigator.mediaDevices.getUserMedia(constraints);
+              Send({ gen, result: "ok" });
+            } catch (e) {
+              Send({ gen, result: `${e}` });
+            }
+          } else if (name == "stop") {
+            const result = !!stream;
+            if (stream) {
+              for (const t of stream.getTracks()) {
+                t.stop();
+              }
+              stream = undefined;
+            }
+            Send({ gen, result });
+          }
+        }
+      );
+
+      function Send(obj) {
+        window.parent.postMessage(obj, "http://localhost:4245");
+      }
+    </script>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/hello.html b/mobile/android/geckoview/src/androidTest/assets/www/hello.html
new file mode 100644
index 0000000000..5ebd20f929
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/hello.html
@@ -0,0 +1,10 @@
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <title>Hello, world!</title>
+    <link rel="manifest" href="manifest.webmanifest" />
+  </head>
+  <body>
+    <p>Hello, world!</p>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/hello2.html b/mobile/android/geckoview/src/androidTest/assets/www/hello2.html
new file mode 100644
index 0000000000..d03c2d5521
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/hello2.html
@@ -0,0 +1,9 @@
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <title>Hello, world! Again!</title>
+  </head>
+  <body>
+    <p>Hello, world! Again!</p>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/helloPDFWorld.pdf b/mobile/android/geckoview/src/androidTest/assets/www/helloPDFWorld.pdf
new file mode 100755
index 0000000000..0f429e1a90
Binary files /dev/null and b/mobile/android/geckoview/src/androidTest/assets/www/helloPDFWorld.pdf differ
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/hsts_header.sjs b/mobile/android/geckoview/src/androidTest/assets/www/hsts_header.sjs
new file mode 100644
index 0000000000..e53ad908fa
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/hsts_header.sjs
@@ -0,0 +1,6 @@
+function handleRequest(request, response) {
+  response.setHeader(
+    "Strict-Transport-Security",
+    "max-age=60; includeSubDomains"
+  );
+}
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/hungScript.html b/mobile/android/geckoview/src/androidTest/assets/www/hungScript.html
new file mode 100644
index 0000000000..6b56f4e2e7
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/hungScript.html
@@ -0,0 +1,16 @@
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <title>Hung Script</title>
+  </head>
+  <body>
+    <div id="content"></div>
+  </body>
+  <script>
+    var start = new Date().getTime();
+    document.getElementById("content").innerHTML = "Started";
+    // eslint-disable-next-line no-empty
+    while (new Date().getTime() - start < 5000) {}
+    document.getElementById("content").innerHTML = "Finished";
+  </script>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/iframe_100_percent_height_no_scrollable.html b/mobile/android/geckoview/src/androidTest/assets/www/iframe_100_percent_height_no_scrollable.html
new file mode 100644
index 0000000000..3e7bd5cdd0
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/iframe_100_percent_height_no_scrollable.html
@@ -0,0 +1,60 @@
+<!DOCTYPE html>
+<html>
+  <meta charset="utf-8" />
+  <meta name="viewport" content="width=device-width, user-scalable=no" />
+  <style>
+    html {
+      height: 100%;
+      width: 100%;
+      /* background contains one extra transparent.gif because we want trick the
+     contentful paint detection; We want to make sure the background is loaded
+     before the test starts so we always wait for the contentful paint timestamp
+     to exist, however, gradient isn't considered as contentful per spec, so Gecko
+     wouldn't generate a timestamp for it. Hence, we added a transparent gif
+     to the image list to trick the detection. */
+      background: url("/assets/www/transparent.gif"),
+        linear-gradient(135deg, red, white);
+    }
+    body {
+      height: 100%;
+      width: 100%;
+      margin: 0px;
+      padding: 0px;
+    }
+    iframe {
+      height: 100%;
+      width: 100%;
+      margin: 0px;
+      padding: 0px;
+      border: none;
+      display: block;
+    }
+  </style>
+  <iframe
+    frameborder="0"
+    srcdoc="<!DOCTYPE HTML>
+                <html>
+                <style>
+                html, body {
+                  height: 100%;
+                  width: 100%;
+                  margin: 0px;
+                  padding: 0px;
+                }
+                </style>
+                <body>
+                <div style='width: 100%; height: 100%; background-color: green;'></div>
+                <script>
+                  if (parent.document.location.search.startsWith('?event')) {
+                    document.querySelector('div').addEventListener('touchstart', e => {
+                      if (parent.document.location.search == '?event-prevent') {
+                        e.preventDefault();
+                      }
+                    });
+                  }
+                </script>
+                </body>
+                </html>"
+  >
+  </iframe>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/iframe_100_percent_height_scrollable.html b/mobile/android/geckoview/src/androidTest/assets/www/iframe_100_percent_height_scrollable.html
new file mode 100644
index 0000000000..e7517c5f12
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/iframe_100_percent_height_scrollable.html
@@ -0,0 +1,60 @@
+<!DOCTYPE html>
+<html>
+  <meta charset="utf-8" />
+  <meta name="viewport" content="width=device-width, user-scalable=no" />
+  <style>
+    html {
+      height: 100%;
+      width: 100%;
+      /* background contains one extra transparent.gif because we want trick the
+     contentful paint detection; We want to make sure the background is loaded
+     before the test starts so we always wait for the contentful paint timestamp
+     to exist, however, gradient isn't considered as contentful per spec, so Gecko
+     wouldn't generate a timestamp for it. Hence, we added a transparent gif
+     to the image list to trick the detection. */
+      background: url("/assets/www/transparent.gif"),
+        linear-gradient(135deg, red, white);
+    }
+    body {
+      height: 100%;
+      width: 100%;
+      margin: 0px;
+      padding: 0px;
+    }
+    iframe {
+      height: 100%;
+      width: 100%;
+      margin: 0px;
+      padding: 0px;
+      border: none;
+      display: block;
+    }
+  </style>
+  <iframe
+    frameborder="0"
+    srcdoc="<!DOCTYPE HTML>
+                <html>
+                <style>
+                html, body {
+                  height: 100%;
+                  width: 100%;
+                  margin: 0px;
+                  padding: 0px;
+                }
+                </style>
+                <body>
+                <div style='width: 100%; height: 500vh; background-color: green;'></div>
+                <script>
+                  if (parent.document.location.search.startsWith('?event')) {
+                    document.querySelector('div').addEventListener('touchstart', e => {
+                      if (parent.document.location.search == '?event-prevent') {
+                        e.preventDefault();
+                      }
+                    });
+                  }
+                </script>
+                </body>
+                </html>"
+  >
+  </iframe>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/iframe_98vh_no_scrollable.html b/mobile/android/geckoview/src/androidTest/assets/www/iframe_98vh_no_scrollable.html
new file mode 100644
index 0000000000..9766f41b7f
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/iframe_98vh_no_scrollable.html
@@ -0,0 +1,55 @@
+<!DOCTYPE html>
+<html>
+  <meta charset="utf-8" />
+  <meta name="viewport" content="width=device-width, user-scalable=no" />
+  <style>
+    html,
+    body {
+      margin: 0px;
+      padding: 0px;
+      /* background contains one extra transparent.gif because we want trick the
+     contentful paint detection; We want to make sure the background is loaded
+     before the test starts so we always wait for the contentful paint timestamp
+     to exist, however, gradient isn't considered as contentful per spec, so Gecko
+     wouldn't generate a timestamp for it. Hence, we added a transparent gif
+     to the image list to trick the detection. */
+      background: url("/assets/www/transparent.gif"),
+        linear-gradient(135deg, red, white);
+    }
+    iframe {
+      margin: 0px;
+      padding: 0px;
+      height: 98vh;
+      width: 100%;
+      border: none;
+      display: block;
+    }
+  </style>
+  <iframe
+    frameborder="0"
+    srcdoc="<!DOCTYPE HTML>
+                <html>
+                <style>
+                html, body {
+                  height: 100%;
+                  width: 100%;
+                  margin: 0px;
+                  padding: 0px;
+                }
+                </style>
+                <body>
+                <div style='width: 100%; height: 100%; background-color: green;'></div>
+                <script>
+                  if (parent.document.location.search.startsWith('?event')) {
+                    document.querySelector('div').addEventListener('touchstart', e => {
+                      if (parent.document.location.search == '?event-prevent') {
+                        e.preventDefault();
+                      }
+                    });
+                  }
+                </script>
+                </body>
+                </html>"
+  >
+  </iframe>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/iframe_98vh_scrollable.html b/mobile/android/geckoview/src/androidTest/assets/www/iframe_98vh_scrollable.html
new file mode 100644
index 0000000000..ca356958df
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/iframe_98vh_scrollable.html
@@ -0,0 +1,55 @@
+<!DOCTYPE html>
+<html>
+  <meta charset="utf-8" />
+  <meta name="viewport" content="width=device-width, user-scalable=no" />
+  <style>
+    html,
+    body {
+      margin: 0px;
+      padding: 0px;
+      /* background contains one extra transparent.gif because we want trick the
+     contentful paint detection; We want to make sure the background is loaded
+     before the test starts so we always wait for the contentful paint timestamp
+     to exist, however, gradient isn't considered as contentful per spec, so Gecko
+     wouldn't generate a timestamp for it. Hence, we added a transparent gif
+     to the image list to trick the detection. */
+      background: url("/assets/www/transparent.gif"),
+        linear-gradient(135deg, red, white);
+    }
+    iframe {
+      margin: 0px;
+      padding: 0px;
+      height: 98vh;
+      width: 100%;
+      border: none;
+      display: block;
+    }
+  </style>
+  <iframe
+    frameborder="0"
+    srcdoc="<!DOCTYPE HTML>
+                <html>
+                <style>
+                html, body {
+                  height: 100%;
+                  width: 100%;
+                  margin: 0px;
+                  padding: 0px;
+                }
+                </style>
+                <body>
+                <div style='width: 100%; height: 500vh; background-color: green;'></div>
+                <script>
+                  if (parent.document.location.search.startsWith('?event')) {
+                    document.querySelector('div').addEventListener('touchstart', e => {
+                      if (parent.document.location.search == '?event-prevent') {
+                        e.preventDefault();
+                      }
+                    });
+                  }
+                </script>
+                </body>
+                </html>"
+  >
+  </iframe>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/iframe_hello.html b/mobile/android/geckoview/src/androidTest/assets/www/iframe_hello.html
new file mode 100644
index 0000000000..ee4962a2b7
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/iframe_hello.html
@@ -0,0 +1,10 @@
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <title>Hello, world!</title>
+  </head>
+  <body>
+    <p>Hello, world! From Top Level.</p>
+    <iframe src="hello.html"></iframe>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/iframe_http_only.html b/mobile/android/geckoview/src/androidTest/assets/www/iframe_http_only.html
new file mode 100644
index 0000000000..8f94d6c86d
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/iframe_http_only.html
@@ -0,0 +1,14 @@
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+  </head>
+  <body>
+    Some stuff
+    <iframe
+      src="http://expired.example.com/"
+      width="100%"
+      height="100%"
+    ></iframe>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/iframe_redirect_automation.html b/mobile/android/geckoview/src/androidTest/assets/www/iframe_redirect_automation.html
new file mode 100644
index 0000000000..61b81cf563
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/iframe_redirect_automation.html
@@ -0,0 +1,12 @@
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+  </head>
+  <body>
+    Some stuff
+    <iframe
+      src="http://example.org/tests/junit/simple_redirect.sjs?http://example.org"
+    ></iframe>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/iframe_redirect_local.html b/mobile/android/geckoview/src/androidTest/assets/www/iframe_redirect_local.html
new file mode 100644
index 0000000000..eb109536f0
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/iframe_redirect_local.html
@@ -0,0 +1,10 @@
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+  </head>
+  <body>
+    Some stuff
+    <iframe src="http://jigsaw.w3.org/HTTP/300/301.html"></iframe>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/iframe_unknown_protocol.html b/mobile/android/geckoview/src/androidTest/assets/www/iframe_unknown_protocol.html
new file mode 100644
index 0000000000..81fb616b60
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/iframe_unknown_protocol.html
@@ -0,0 +1,10 @@
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <title>Hello, world!</title>
+  </head>
+  <body>
+    <p>Hello, world! From Top Level.</p>
+    <iframe src="foo://bar"></iframe>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/images/test.gif b/mobile/android/geckoview/src/androidTest/assets/www/images/test.gif
new file mode 100644
index 0000000000..ba3b541c31
Binary files /dev/null and b/mobile/android/geckoview/src/androidTest/assets/www/images/test.gif differ
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/inputs.html b/mobile/android/geckoview/src/androidTest/assets/www/inputs.html
new file mode 100644
index 0000000000..554c6c8143
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/inputs.html
@@ -0,0 +1,66 @@
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <title>Inputs</title>
+    <script>
+      class CustomTextBox extends HTMLElement {
+        constructor() {
+          super();
+
+          this.attachShadow({ mode: "open" });
+          const wrapper = document.createElement("span");
+          this.textbox = wrapper.appendChild(document.createElement("input"));
+          this.textbox.value = "adipisci";
+          this.shadowRoot.append(wrapper);
+        }
+
+        focus() {
+          this.textbox.focus();
+        }
+
+        select() {
+          this.textbox.select();
+        }
+
+        setSelectionRange(start, end) {
+          this.textbox.setSelectionRange(start, end);
+        }
+
+        get selectionStart() {
+          return this.textbox.selectionStart;
+        }
+
+        get selectionEnd() {
+          return this.textbox.selectionEnd;
+        }
+
+        get value() {
+          return this.textbox.value;
+        }
+      }
+      customElements.define("x-input", CustomTextBox);
+    </script>
+  </head>
+  <body>
+    <div id="text">lorem</div>
+    <input type="text" id="input" value="ipsum" />
+    <textarea id="textarea">dolor</textarea>
+    <div id="contenteditable" contenteditable="true">sit</div>
+    <iframe id="iframe" src="selectionAction_frame.html"></iframe>
+    <iframe id="designmode" src="selectionAction_frame.html"></iframe>
+    <iframe
+      id="iframe-xorigin"
+      src="http://127.0.0.1:4245/assets/www/selectionAction_frame_xorigin.html"
+    ></iframe>
+    <x-input id="x-input"></x-input>
+  </body>
+  <script>
+    addEventListener("load", function () {
+      document.getElementById("iframe").contentDocument.body.textContent =
+        "amet";
+      var designmode = document.getElementById("designmode");
+      designmode.contentDocument.body.textContent = "consectetur";
+      designmode.contentDocument.designMode = "on";
+    });
+  </script>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/links.html b/mobile/android/geckoview/src/androidTest/assets/www/links.html
new file mode 100644
index 0000000000..186426b0e2
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/links.html
@@ -0,0 +1,28 @@
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <title>Links</title>
+    <style>
+      :link {
+        color: rgb(0, 0, 255);
+      }
+
+      :visited {
+        color: rgb(255, 0, 0);
+      }
+    </style>
+  </head>
+  <body>
+    <ul>
+      <li><a id="mozilla" href="https://mozilla.org">Mozilla</a></li>
+      <li><a id="firefox" href="https://getfirefox.com">Get Firefox!</a></li>
+      <li><a id="bugzilla" href="https://bugzilla.mozilla.org">Bugzilla</a></li>
+      <li>
+        <a id="testpilot" href="https://testpilot.firefox.com">Test Pilot</a>
+      </li>
+      <li>
+        <a id="fxa" href="https://accounts.firefox.com">Firefox Accounts</a>
+      </li>
+    </ul>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/loremIpsum.html b/mobile/android/geckoview/src/androidTest/assets/www/loremIpsum.html
new file mode 100644
index 0000000000..e772f605f0
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/loremIpsum.html
@@ -0,0 +1,17 @@
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <title>Lorem ipsum</title>
+  </head>
+  <body>
+    <p style="font-family: monospace; width: 20ch">
+      Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod
+      tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim
+      veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea
+      commodo consequat. Duis aute irure dolor in reprehenderit in voluptate
+      velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat
+      cupidatat non proident, sunt in culpa qui officia deserunt mollit
+      <a href="#">anim id</a> est laborum.
+    </p>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/manifest.webmanifest b/mobile/android/geckoview/src/androidTest/assets/www/manifest.webmanifest
new file mode 100644
index 0000000000..5528465ba2
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/manifest.webmanifest
@@ -0,0 +1,17 @@
+{
+  "name": "App",
+  "short_name": "app",
+  "start_url": "./start/index.html",
+  "display": "standalone",
+  "background_color": "#c0ffeeee",
+  "theme_color": "cadetblue",
+  "icons": [{
+    "src": "images/test.gif",
+    "sizes": "192x192",
+    "type": "image/gif"
+  }],
+  "related_applications": [{
+    "platform": "play",
+    "url": "https://play.google.com/store/apps/details?id=my.first.webapp"
+  }]
+}
\ No newline at end of file
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/media_session_default1.html b/mobile/android/geckoview/src/androidTest/assets/www/media_session_default1.html
new file mode 100644
index 0000000000..3d6554012b
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/media_session_default1.html
@@ -0,0 +1,15 @@
+<html>
+  <head>
+    <title>MediaSessionDefaultTest1</title>
+  </head>
+  <body>
+    <script>
+      const audio1 = document.createElement("audio");
+      audio1.src = "audio/owl.mp3";
+
+      window.onload = () => {
+        audio1.play();
+      };
+    </script>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/media_session_dom1.html b/mobile/android/geckoview/src/androidTest/assets/www/media_session_dom1.html
new file mode 100644
index 0000000000..8fa9584428
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/media_session_dom1.html
@@ -0,0 +1,109 @@
+<html>
+  <head>
+    <title>MediaSessionDOMTest1</title>
+  </head>
+  <body>
+    <script>
+      function updatePositionState(event) {
+        if (event.target != active) {
+          return;
+        }
+        navigator.mediaSession.setPositionState({
+          duration: parseFloat(event.target.duration),
+          position: parseFloat(event.target.currentTime),
+          playbackRate: 1,
+        });
+      }
+
+      function updateMetadata() {
+        navigator.mediaSession.metadata = active.metadata;
+      }
+
+      function getTrack(offset) {
+        console.log("" + active.id + " " + offset);
+        const nextId = Math.min(
+          tracks.length - 1,
+          Math.max(0, parseInt(active.id) + offset)
+        );
+        return tracks[nextId];
+      }
+
+      navigator.mediaSession.setActionHandler("play", async () => {
+        updateMetadata();
+        await active.play();
+      });
+
+      navigator.mediaSession.setActionHandler("pause", () => {
+        active.pause();
+      });
+
+      navigator.mediaSession.setActionHandler("previoustrack", () => {
+        active = getTrack(-1);
+      });
+
+      navigator.mediaSession.setActionHandler("nexttrack", () => {
+        active = getTrack(1);
+      });
+
+      const audio1 = document.createElement("audio");
+      audio1.src = "audio/owl.mp3";
+      audio1.addEventListener("timeupdate", updatePositionState);
+      audio1.metadata = new window.MediaMetadata({
+        title: "hoot",
+        artist: "owl",
+        album: "hoots",
+        artwork: [
+          {
+            src: "images/test.gif",
+            type: "image/gif",
+            sizes: "265x199",
+          },
+        ],
+      });
+      audio1.id = 0;
+
+      const audio2 = document.createElement("audio");
+      audio2.src = "audio/owl.mp3";
+      audio2.addEventListener("timeupdate", updatePositionState);
+      audio2.metadata = new window.MediaMetadata({
+        title: "hoot2",
+        artist: "stillowl",
+        album: "dahoots",
+        artwork: [
+          {
+            src: "images/test.gif",
+            type: "image/gif",
+            sizes: "265x199",
+          },
+        ],
+      });
+      audio2.id = 1;
+
+      const audio3 = document.createElement("audio");
+      audio3.src = "audio/owl.mp3";
+      audio3.addEventListener("timeupdate", updatePositionState);
+      audio3.metadata = new window.MediaMetadata({
+        title: "hoot3",
+        artist: "immaowl",
+        album: "mahoots",
+        artwork: [
+          {
+            src: "images/test.gif",
+            type: "image/gif",
+            sizes: "265x199",
+          },
+        ],
+      });
+      audio3.id = 2;
+
+      const tracks = [audio1, audio2, audio3];
+      let active = audio1;
+
+      window.onload = async () => {
+        active = getTrack(0);
+        updateMetadata();
+        await active.play();
+      };
+    </script>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/metatags.html b/mobile/android/geckoview/src/androidTest/assets/www/metatags.html
new file mode 100644
index 0000000000..946c9faf27
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/metatags.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="UTF-8" />
+    <title>MetaTags</title>
+    <meta property="twitter:description" content="twitter:description" />
+    <meta property="og:description" content="og:description" />
+    <meta name="description" content="description" />
+    <meta name="unknown:tag" content="unknown:tag" />
+    <meta property="og:image" content="https://test.com/og-image.jpg" />
+    <meta
+      property="twitter:image"
+      content="https://test.com/twitter-image.jpg"
+    />
+    <meta property="og:image:url" content="https://test.com/og-image-url" />
+    <meta name="thumbnail" content="https://test.com/thumbnail.jpg" />
+  </head>
+  <body></body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/mouseToReload.html b/mobile/android/geckoview/src/androidTest/assets/www/mouseToReload.html
new file mode 100644
index 0000000000..fef911a926
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/mouseToReload.html
@@ -0,0 +1,10 @@
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <title>Hello, world!</title>
+    <meta name="viewport" content="initial-scale=1.0" />
+  </head>
+  <body style="height: 100%" onmousemove="window.location.reload()">
+    <p>Hello, world!</p>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/mp4.html b/mobile/android/geckoview/src/androidTest/assets/www/mp4.html
new file mode 100644
index 0000000000..09909fac69
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/mp4.html
@@ -0,0 +1,11 @@
+<html>
+    <head>
+        <meta charset="utf-8">
+        <title>MP4 Video</title>
+    </head>
+    <body>
+        <video controls preload>
+            <source src="videos/short.mp4"></source>
+        </video>
+    </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/newSession.html b/mobile/android/geckoview/src/androidTest/assets/www/newSession.html
new file mode 100644
index 0000000000..b92657430c
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/newSession.html
@@ -0,0 +1,22 @@
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <title>Hello, world!</title>
+  </head>
+  <body>
+    <a
+      id="targetBlankLink"
+      target="_blank"
+      rel="opener"
+      href="newSession_child.html"
+      >target="_blank"</a
+    >
+    <a
+      id="noOpenerLink"
+      target="_blank"
+      rel="noopener"
+      href="http://example.com"
+      >rel="noopener"</a
+    >
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/newSession_child.html b/mobile/android/geckoview/src/androidTest/assets/www/newSession_child.html
new file mode 100644
index 0000000000..28fd019804
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/newSession_child.html
@@ -0,0 +1,9 @@
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <title>Hello, world!</title>
+  </head>
+  <body>
+    <p>I'm the child</p>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/no-meta-viewport.html b/mobile/android/geckoview/src/androidTest/assets/www/no-meta-viewport.html
new file mode 100644
index 0000000000..8f1cb8fa80
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/no-meta-viewport.html
@@ -0,0 +1,5 @@
+<!DOCTYPE html>
+<html>
+  <meta charset="utf-8" />
+  <h3>Nothing here</h3>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/ogg.html b/mobile/android/geckoview/src/androidTest/assets/www/ogg.html
new file mode 100644
index 0000000000..dd478d3b3f
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/ogg.html
@@ -0,0 +1,11 @@
+<html>
+    <head>
+        <meta charset="utf-8">
+        <title>OGG Video</title>
+    </head>
+    <body>
+        <video controls preload>
+            <source src="videos/video.ogg"></source>
+        </video>
+    </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/overscroll-behavior-auto-none.html b/mobile/android/geckoview/src/androidTest/assets/www/overscroll-behavior-auto-none.html
new file mode 100644
index 0000000000..ff180f961a
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/overscroll-behavior-auto-none.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<html>
+  <meta charset="utf-8" />
+  <meta name="viewport" content="width=device-width, user-scalable=no" />
+  <style>
+    html {
+      height: 100%;
+      width: 100%;
+      /* background contains one extra transparent.gif because we want trick the
+     contentful paint detection; We want to make sure the background is loaded
+     before the test starts so we always wait for the contentful paint timestamp
+     to exist, however, gradient isn't considered as contentful per spec, so Gecko
+     wouldn't generate a timestamp for it. Hence, we added a transparent gif
+     to the image list to trick the detection. */
+      background: url("/assets/www/transparent.gif"),
+        linear-gradient(135deg, red, white);
+      overscroll-behavior: auto none;
+    }
+    body {
+      width: 100%;
+      margin: 0px;
+      padding: 0px;
+    }
+  </style>
+  <body>
+    <div style="width: 100%; height: 100vh"></div>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/overscroll-behavior-auto.html b/mobile/android/geckoview/src/androidTest/assets/www/overscroll-behavior-auto.html
new file mode 100644
index 0000000000..6f2b3ee92a
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/overscroll-behavior-auto.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<html>
+  <meta charset="utf-8" />
+  <meta name="viewport" content="width=device-width, user-scalable=no" />
+  <style>
+    html {
+      height: 100%;
+      width: 100%;
+      /* background contains one extra transparent.gif because we want trick the
+     contentful paint detection; We want to make sure the background is loaded
+     before the test starts so we always wait for the contentful paint timestamp
+     to exist, however, gradient isn't considered as contentful per spec, so Gecko
+     wouldn't generate a timestamp for it. Hence, we added a transparent gif
+     to the image list to trick the detection. */
+      background: url("/assets/www/transparent.gif"),
+        linear-gradient(135deg, red, white);
+      overscroll-behavior: auto;
+    }
+    body {
+      width: 100%;
+      margin: 0px;
+      padding: 0px;
+    }
+  </style>
+  <body>
+    <div style="width: 100%; height: 100vh"></div>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/overscroll-behavior-none-auto.html b/mobile/android/geckoview/src/androidTest/assets/www/overscroll-behavior-none-auto.html
new file mode 100644
index 0000000000..ff6366ccda
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/overscroll-behavior-none-auto.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<html>
+  <meta charset="utf-8" />
+  <meta name="viewport" content="width=device-width, user-scalable=no" />
+  <style>
+    html {
+      height: 100%;
+      width: 100%;
+      /* background contains one extra transparent.gif because we want trick the
+     contentful paint detection; We want to make sure the background is loaded
+     before the test starts so we always wait for the contentful paint timestamp
+     to exist, however, gradient isn't considered as contentful per spec, so Gecko
+     wouldn't generate a timestamp for it. Hence, we added a transparent gif
+     to the image list to trick the detection. */
+      background: url("/assets/www/transparent.gif"),
+        linear-gradient(135deg, red, white);
+      overscroll-behavior: none auto;
+    }
+    body {
+      width: 100%;
+      margin: 0px;
+      padding: 0px;
+    }
+  </style>
+  <body>
+    <div style="width: 100%; height: 100vh"></div>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/overscroll-behavior-none-on-non-root.html b/mobile/android/geckoview/src/androidTest/assets/www/overscroll-behavior-none-on-non-root.html
new file mode 100644
index 0000000000..fbe2269c19
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/overscroll-behavior-none-on-non-root.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<html>
+  <meta charset="utf-8" />
+  <meta name="viewport" content="width=device-width, user-scalable=no" />
+  <style>
+    html {
+      height: 100%;
+      width: 100%;
+      /* background contains one extra transparent.gif because we want trick the
+     contentful paint detection; We want to make sure the background is loaded
+     before the test starts so we always wait for the contentful paint timestamp
+     to exist, however, gradient isn't considered as contentful per spec, so Gecko
+     wouldn't generate a timestamp for it. Hence, we added a transparent gif
+     to the image list to trick the detection. */
+      background: url("/assets/www/transparent.gif"),
+        linear-gradient(135deg, red, white);
+    }
+    body {
+      width: 100%;
+      margin: 0px;
+      padding: 0px;
+    }
+  </style>
+  <body>
+    <div
+      id="scroll"
+      style="
+        width: 100%;
+        height: 100vh;
+        overscroll-behavior: none;
+        overflow-y: scroll;
+      "
+    >
+      <div style="height: 200vh"></div>
+    </div>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/popup.html b/mobile/android/geckoview/src/androidTest/assets/www/popup.html
new file mode 100644
index 0000000000..7e52870df5
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/popup.html
@@ -0,0 +1,12 @@
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <title>Hello, world!</title>
+  </head>
+  <body>
+    <p>Launching popup...</p>
+    <script>
+      window.open("hello.html");
+    </script>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/print_content_change.html b/mobile/android/geckoview/src/androidTest/assets/www/print_content_change.html
new file mode 100644
index 0000000000..ae36a6c6b8
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/print_content_change.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8" content="width=device-width, height=device-height" />
+    <title>Orange Print Background Removal</title>
+  </head>
+  <style>
+    .box {
+      height: 200vh;
+      width: 100vw;
+    }
+    @media screen {
+      .background {
+        background-color: rgb(0, 0, 255);
+        color-adjust: exact;
+      }
+    }
+    @media print {
+      .background {
+        background-color: rgb(255, 113, 57);
+        color-adjust: exact;
+      }
+    }
+  </style>
+
+  <body>
+    <div id="content" class="box background"></div>
+  </body>
+
+  <!-- The window.print should freeze the page before removing the content, so the background should remain present. -->
+  <button
+    id="print-button"
+    onclick="window.print(); document.getElementById('content').remove()"
+  >
+    Print
+  </button>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/print_iframe.html b/mobile/android/geckoview/src/androidTest/assets/www/print_iframe.html
new file mode 100644
index 0000000000..b7dd83f2a5
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/print_iframe.html
@@ -0,0 +1,39 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8" content="width=device-width, height=device-height" />
+    <title>Print iframes</title>
+  </head>
+  <style>
+    .box {
+      height: 200vh;
+      width: 100vw;
+    }
+    @media screen {
+      .background {
+        background-color: rgb(255, 0, 0);
+        color-adjust: exact;
+      }
+    }
+    @media print {
+      .background {
+        background-color: rgb(0, 255, 0);
+        color-adjust: exact;
+      }
+    }
+  </style>
+
+  <body>
+    <div id="content" class="box background"></div>
+  </body>
+
+  <!-- The window.print should freeze the page before removing the content, so the background should remain present. -->
+  <button
+    id="print-button-page"
+    onclick="window.print(); document.getElementById('content').remove()"
+  >
+    Print
+  </button>
+
+  <iframe id="iframe" src="print_content_change.html"></iframe>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/prompts.html b/mobile/android/geckoview/src/androidTest/assets/www/prompts.html
new file mode 100644
index 0000000000..53e8f96b04
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/prompts.html
@@ -0,0 +1,31 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8" />
+  </head>
+  <body>
+    <select id="selectexample">
+      <option>1</option>
+      <option>2</option>
+    </select>
+
+    <input type="date" id="dateexample" />
+
+    <input type="month" id="monthexample" />
+
+    <input type="week" id="weekexample" />
+
+    <input type="time" id="timeexample" />
+
+    <input type="datetime-local" id="datetimelocalexample" />
+
+    <input type="color" id="colorexample" value="#ffffff" />
+
+    <input type="file" id="fileexample" accept="image/*,.pdf" capture="user" />
+
+    <datalist id="colorlist">
+      <option>#000000</option>
+      <option>#808080</option>
+    </datalist>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/push/push.html b/mobile/android/geckoview/src/androidTest/assets/www/push/push.html
new file mode 100644
index 0000000000..ccd091eaea
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/push/push.html
@@ -0,0 +1,10 @@
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <title>Push API test</title>
+  </head>
+  <body>
+    <p>Hello, world!</p>
+    <script src="push.js"></script>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/push/push.js b/mobile/android/geckoview/src/androidTest/assets/www/push/push.js
new file mode 100644
index 0000000000..d9322d11cc
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/push/push.js
@@ -0,0 +1,44 @@
+window.doSubscribe = async function (applicationServerKey) {
+  const registration = await navigator.serviceWorker.register("./sw.js");
+  const sub = await registration.pushManager.subscribe({
+    applicationServerKey,
+  });
+  return sub.toJSON();
+};
+
+window.doGetSubscription = async function () {
+  const registration = await navigator.serviceWorker.register("./sw.js");
+  const sub = await registration.pushManager.getSubscription();
+  if (sub) {
+    return sub.toJSON();
+  }
+
+  return null;
+};
+
+window.doUnsubscribe = async function () {
+  const registration = await navigator.serviceWorker.register("./sw.js");
+  const sub = await registration.pushManager.getSubscription();
+  sub.unsubscribe();
+  return {};
+};
+
+window.doWaitForPushEvent = function () {
+  return new Promise(resolve => {
+    navigator.serviceWorker.addEventListener("message", function (e) {
+      if (e.data.type === "push") {
+        resolve(e.data.payload);
+      }
+    });
+  });
+};
+
+window.doWaitForSubscriptionChange = function () {
+  return new Promise(resolve => {
+    navigator.serviceWorker.addEventListener("message", function (e) {
+      if (e.data.type === "pushsubscriptionchange") {
+        resolve(e.data.type);
+      }
+    });
+  });
+};
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/push/sw.js b/mobile/android/geckoview/src/androidTest/assets/www/push/sw.js
new file mode 100644
index 0000000000..2e51383205
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/push/sw.js
@@ -0,0 +1,30 @@
+self.addEventListener("install", function () {
+  self.skipWaiting();
+});
+
+self.addEventListener("activate", function (e) {
+  e.waitUntil(self.clients.claim());
+});
+
+self.addEventListener("push", async function (e) {
+  const clients = await self.clients.matchAll();
+  let text = "";
+  if (e.data) {
+    text = e.data.text();
+  }
+  clients.forEach(function (client) {
+    client.postMessage({ type: "push", payload: text });
+  });
+
+  try {
+    const { title, body } = e.data.json();
+    self.registration.showNotification(title, { body });
+  } catch (e) {}
+});
+
+self.addEventListener("pushsubscriptionchange", async function (e) {
+  const clients = await self.clients.matchAll();
+  clients.forEach(function (client) {
+    client.postMessage({ type: "pushsubscriptionchange" });
+  });
+});
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/red-background-body-fully-covered-by-green-element.html b/mobile/android/geckoview/src/androidTest/assets/www/red-background-body-fully-covered-by-green-element.html
new file mode 100644
index 0000000000..ad6c96599e
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/red-background-body-fully-covered-by-green-element.html
@@ -0,0 +1,23 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta http-equiv="content-type" content="text/html; charset=windows-1252" />
+    <meta name="viewport" content="width=device-width, initial-scale=1" />
+    <style>
+      html {
+        scrollbar-width: none;
+      }
+      body {
+        background: red;
+        margin: 0;
+      }
+      .tall {
+        height: 600vh;
+        background: green;
+      }
+    </style>
+  </head>
+  <body>
+    <div class="tall"></div>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/reflect_local_storage_into_title.html b/mobile/android/geckoview/src/androidTest/assets/www/reflect_local_storage_into_title.html
new file mode 100644
index 0000000000..749678c668
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/reflect_local_storage_into_title.html
@@ -0,0 +1,17 @@
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <title>no title</title>
+    <script>
+      // If we have a query string, save it to the local storage.
+      if (window.location.search.length) {
+        const value = window.location.search.substr(1);
+        localStorage.setItem("ctx", value);
+      }
+
+      // Set the title to reflect the local storage value.
+      document.title = "storage=" + localStorage.getItem("ctx");
+    </script>
+  </head>
+  <body></body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/resubmit.html b/mobile/android/geckoview/src/androidTest/assets/www/resubmit.html
new file mode 100644
index 0000000000..6155270f1b
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/resubmit.html
@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8" />
+  </head>
+  <body>
+    <form action="hello.html" method="post">
+      <input id="text" />
+      <button id="submit">Submit</button>
+    </form>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/root_100_percent_height.html b/mobile/android/geckoview/src/androidTest/assets/www/root_100_percent_height.html
new file mode 100644
index 0000000000..e91c997bbb
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/root_100_percent_height.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<html>
+  <meta charset="utf-8" />
+  <meta name="viewport" content="width=device-width, user-scalable=no" />
+  <style>
+    html {
+      height: 100%;
+      width: 100%;
+      /* background contains one extra transparent.gif because we want trick the
+     contentful paint detection; We want to make sure the background is loaded
+     before the test starts so we always wait for the contentful paint timestamp
+     to exist, however, gradient isn't considered as contentful per spec, so Gecko
+     wouldn't generate a timestamp for it. Hence, we added a transparent gif
+     to the image list to trick the detection. */
+      background: url("/assets/www/transparent.gif"),
+        linear-gradient(135deg, red, white);
+    }
+    body {
+      height: 100%;
+      width: 100%;
+      margin: 0px;
+      padding: 0px;
+    }
+  </style>
+  <body>
+    <div style="width: 100%; height: 100%; background-color: green"></div>
+    <script>
+      if (document.location.search.startsWith("?event")) {
+        document.querySelector("div").addEventListener("touchstart", e => {
+          if (document.location.search == "?event-prevent") {
+            e.preventDefault();
+          }
+        });
+      }
+    </script>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/root_100vh.html b/mobile/android/geckoview/src/androidTest/assets/www/root_100vh.html
new file mode 100644
index 0000000000..e6c7fef374
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/root_100vh.html
@@ -0,0 +1,36 @@
+<!DOCTYPE html>
+<html>
+  <meta charset="utf-8" />
+  <meta name="viewport" content="width=device-width, user-scalable=no" />
+  <style>
+    html {
+      height: 100%;
+      width: 100%;
+      /* background contains one extra transparent.gif because we want trick the
+     contentful paint detection; We want to make sure the background is loaded
+     before the test starts so we always wait for the contentful paint timestamp
+     to exist, however, gradient isn't considered as contentful per spec, so Gecko
+     wouldn't generate a timestamp for it. Hence, we added a transparent gif
+     to the image list to trick the detection. */
+      background: url("/assets/www/transparent.gif"),
+        linear-gradient(135deg, red, white);
+    }
+    body {
+      width: 100%;
+      margin: 0px;
+      padding: 0px;
+    }
+  </style>
+  <body>
+    <div style="width: 100%; height: 100vh; background-color: green"></div>
+    <script>
+      if (document.location.search.startsWith("?event")) {
+        document.querySelector("div").addEventListener("touchstart", e => {
+          if (document.location.search == "?event-prevent") {
+            e.preventDefault();
+          }
+        });
+      }
+    </script>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/root_98vh.html b/mobile/android/geckoview/src/androidTest/assets/www/root_98vh.html
new file mode 100644
index 0000000000..a654353d64
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/root_98vh.html
@@ -0,0 +1,36 @@
+<!DOCTYPE html>
+<html>
+  <meta charset="utf-8" />
+  <meta name="viewport" content="width=device-width, user-scalable=no" />
+  <style>
+    html {
+      height: 100%;
+      width: 100%;
+      /* background contains one extra transparent.gif because we want trick the
+     contentful paint detection; We want to make sure the background is loaded
+     before the test starts so we always wait for the contentful paint timestamp
+     to exist, however, gradient isn't considered as contentful per spec, so Gecko
+     wouldn't generate a timestamp for it. Hence, we added a transparent gif
+     to the image list to trick the detection. */
+      background: url("/assets/www/transparent.gif"),
+        linear-gradient(135deg, red, white);
+    }
+    body {
+      width: 100%;
+      margin: 0px;
+      padding: 0px;
+    }
+  </style>
+  <body>
+    <div style="width: 100%; height: 98vh; background-color: green"></div>
+    <script>
+      if (document.location.search.startsWith("?event")) {
+        document.querySelector("div").addEventListener("touchstart", e => {
+          if (document.location.search == "?event-prevent") {
+            e.preventDefault();
+          }
+        });
+      }
+    </script>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/saveState.html b/mobile/android/geckoview/src/androidTest/assets/www/saveState.html
new file mode 100644
index 0000000000..c85b528f01
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/saveState.html
@@ -0,0 +1,18 @@
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <title>Hello, world!</title>
+    <meta name="viewport" content="width=device-width,initial-scale=1" />
+    <style>
+      p {
+        height: 300vh;
+      }
+    </style>
+  </head>
+  <body>
+    <form id="form">
+      <input type="text" id="name" />
+    </form>
+    <p>Hello, world!</p>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/scroll-handoff.html b/mobile/android/geckoview/src/androidTest/assets/www/scroll-handoff.html
new file mode 100644
index 0000000000..98018f1a24
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/scroll-handoff.html
@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<html>
+  <meta charset="utf-8" />
+  <meta name="viewport" content="width=device-width, user-scalable=no" />
+  <style>
+    html {
+      height: 100%;
+      width: 100%;
+      /* background contains one extra transparent.gif because we want trick the
+     contentful paint detection; We want to make sure the background is loaded
+     before the test starts so we always wait for the contentful paint timestamp
+     to exist, however, gradient isn't considered as contentful per spec, so Gecko
+     wouldn't generate a timestamp for it. Hence, we added a transparent gif
+     to the image list to trick the detection. */
+      background: url("/assets/www/transparent.gif"),
+        linear-gradient(135deg, red, white);
+      overscroll-behavior: auto;
+    }
+    body {
+      width: 100%;
+      margin: 0px;
+      padding: 0px;
+    }
+    #scroll {
+      /* set a different overscroll-behavior to make this container different from
+     the root scrollElement. */
+      overscroll-behavior: contain auto;
+    }
+  </style>
+  <body>
+    <div id="scroll" style="width: 100%; height: 100vh; overflow-y: scroll">
+      <div style="height: 200vh"></div>
+    </div>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/scroll.html b/mobile/android/geckoview/src/androidTest/assets/www/scroll.html
new file mode 100644
index 0000000000..e906e45686
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/scroll.html
@@ -0,0 +1,59 @@
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=0.5" />
+    <style type="text/css">
+      body {
+        margin: 0;
+        /* background contains one extra transparent.gif because we want trick the
+      contentful paint detection; We want to make sure the background is loaded
+      before the test starts so we always wait for the contentful paint timestamp
+      to exist, however, gradient isn't considered as contentful per spec, so Gecko
+      wouldn't generate a timestamp for it. Hence, we added a transparent gif
+      to the image list to trick the detection. */
+        background: url("/assets/www/transparent.gif"),
+          linear-gradient(135deg, red, white);
+      }
+
+      #one {
+        background-color: red;
+        width: 200vw;
+        height: 33vh;
+      }
+
+      #two {
+        background-color: green;
+        width: 200vw;
+        height: 33vh;
+      }
+
+      #three {
+        background-color: blue;
+        width: 200vw;
+        height: 33vh;
+      }
+
+      #four {
+        background-color: purple;
+        width: 200vw;
+        height: 200vh;
+      }
+    </style>
+  </head>
+  <body>
+    <div id="one"></div>
+    <div id="two"></div>
+    <div id="three"></div>
+    <div id="four"></div>
+    <script>
+      document.getElementById("two").addEventListener("touchstart", e => {
+        console.log("preventing default");
+        e.preventDefault();
+      });
+
+      document.getElementById("three").addEventListener("touchstart", e => {
+        console.log("not preventing default");
+      });
+    </script>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/select-listbox.html b/mobile/android/geckoview/src/androidTest/assets/www/select-listbox.html
new file mode 100644
index 0000000000..5832954d2e
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/select-listbox.html
@@ -0,0 +1,7 @@
+<!DOCTYPE html>
+<meta name="viewport" content="width=device-width, initial-scale=1.0" />
+<select size="2" id="multiple">
+  <option>ABC</option>
+  <option>DEF</option>
+  <option>GHI</option>
+</select>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/select-multiple.html b/mobile/android/geckoview/src/androidTest/assets/www/select-multiple.html
new file mode 100644
index 0000000000..bb9470fffd
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/select-multiple.html
@@ -0,0 +1,7 @@
+<!DOCTYPE html>
+<meta name="viewport" content="width=device-width, initial-scale=1.0" />
+<select multiple id="multiple">
+  <option>ABC</option>
+  <option>DEF</option>
+  <option>GHI</option>
+</select>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/select.html b/mobile/android/geckoview/src/androidTest/assets/www/select.html
new file mode 100644
index 0000000000..e8d28253d2
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/select.html
@@ -0,0 +1,6 @@
+<!DOCTYPE html>
+<meta name="viewport" content="width=device-width, initial-scale=1.0" />
+<select id="simple">
+  <option>ABC</option>
+  <option>DEF</option>
+</select>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/selectionAction_frame.html b/mobile/android/geckoview/src/androidTest/assets/www/selectionAction_frame.html
new file mode 100644
index 0000000000..132155c6a1
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/selectionAction_frame.html
@@ -0,0 +1,6 @@
+<html>
+  <head>
+    <meta charset="utf-8" />
+  </head>
+  <body></body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/selectionAction_frame_xorigin.html b/mobile/android/geckoview/src/androidTest/assets/www/selectionAction_frame_xorigin.html
new file mode 100644
index 0000000000..f1121e63d2
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/selectionAction_frame_xorigin.html
@@ -0,0 +1,41 @@
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <script>
+      window.addEventListener("message", e => {
+        switch (e.data.type) {
+          case "focus":
+            window.focus();
+            break;
+
+          case "select": {
+            const text = document.body.firstChild;
+            document
+              .getSelection()
+              .setBaseAndExtent(text, 0, text, e.data.length);
+            break;
+          }
+
+          case "selectedOffset": {
+            const sel = document.getSelection();
+            const text = document.body.firstChild;
+            if (sel.anchorNode !== text || sel.focusNode !== text) {
+              window.parent.postMessage([-1, -1], "*");
+            } else {
+              window.parent.postMessage(
+                [sel.anchorOffset, sel.focusOffset],
+                "*"
+              );
+            }
+            break;
+          }
+
+          case "content":
+            window.parent.postMessage(document.body.textContent, "*");
+            break;
+        }
+      });
+    </script>
+  </head>
+  <body onload="document.body.textContent = 'elit'"></body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/showDynamicToolbar.html b/mobile/android/geckoview/src/androidTest/assets/www/showDynamicToolbar.html
new file mode 100644
index 0000000000..f6b0dd340c
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/showDynamicToolbar.html
@@ -0,0 +1,96 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1" />
+    <title>showDynamicToolbar test content</title>
+    <script>
+      document.addEventListener("click", function () {
+        document.body.style.position = "fixed";
+      });
+    </script>
+  </head>
+  <body>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+    <p>Paragraph</p>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/simple_redirect.sjs b/mobile/android/geckoview/src/androidTest/assets/www/simple_redirect.sjs
new file mode 100644
index 0000000000..43fec90b5a
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/simple_redirect.sjs
@@ -0,0 +1,4 @@
+function handleRequest(request, response) {
+  response.setStatusLine(request.httpVersion, 301, "Moved Permanently");
+  response.setHeader("Location", request.queryString, false);
+}
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/titleChange.html b/mobile/android/geckoview/src/androidTest/assets/www/titleChange.html
new file mode 100644
index 0000000000..51f8c936b6
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/titleChange.html
@@ -0,0 +1,16 @@
+<html>
+  <head>
+    <meta charset="utf-8" />
+  </head>
+  <header><title>Title1</title></header>
+  <body>
+    <script>
+      addEventListener("load", function () {
+        setTimeout(function () {
+          document.title = "Title2";
+        }, 100);
+      });
+    </script>
+  </body>
+  <iframe src="hello.html"></iframe>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/touch-action-wheel-listener.html b/mobile/android/geckoview/src/androidTest/assets/www/touch-action-wheel-listener.html
new file mode 100644
index 0000000000..cfc9489d17
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/touch-action-wheel-listener.html
@@ -0,0 +1,33 @@
+<!DOCTYPE html>
+<html>
+  <meta charset="utf-8" />
+  <meta name="viewport" content="width=device-width, user-scalable=no" />
+  <style>
+    html {
+      height: 100%;
+      width: 100%;
+      /* background contains one extra transparent.gif because we want trick the
+     contentful paint detection; We want to make sure the background is loaded
+     before the test starts so we always wait for the contentful paint timestamp
+     to exist, however, gradient isn't considered as contentful per spec, so Gecko
+     wouldn't generate a timestamp for it. Hence, we added a transparent gif
+     to the image list to trick the detection. */
+      background: url("/assets/www/transparent.gif"),
+        linear-gradient(135deg, red, white);
+    }
+    body {
+      width: 100%;
+      margin: 0px;
+      padding: 0px;
+    }
+  </style>
+  <body>
+    <div id="one" style="width: 100%; height: 100vh; touch-action: none"></div>
+    <script>
+      document.getElementById("one").addEventListener("wheel", e => {
+        console.log("preventing default");
+        e.preventDefault();
+      });
+    </script>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/touch-action.html b/mobile/android/geckoview/src/androidTest/assets/www/touch-action.html
new file mode 100644
index 0000000000..62266b6ef7
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/touch-action.html
@@ -0,0 +1,48 @@
+<!DOCTYPE html>
+<html>
+  <meta charset="utf-8" />
+  <meta name="viewport" content="width=device-width, user-scalable=no" />
+  <style>
+    html {
+      height: 100%;
+      width: 100%;
+      /* background contains one extra transparent.gif because we want trick the
+     contentful paint detection; We want to make sure the background is loaded
+     before the test starts so we always wait for the contentful paint timestamp
+     to exist, however, gradient isn't considered as contentful per spec, so Gecko
+     wouldn't generate a timestamp for it. Hence, we added a transparent gif
+     to the image list to trick the detection. */
+      background: url("/assets/www/transparent.gif"),
+        linear-gradient(135deg, red, white);
+    }
+    body {
+      width: 100%;
+      margin: 0px;
+      padding: 0px;
+    }
+  </style>
+  <body>
+    <div style="width: 100%; height: 50vh; touch-action: auto"></div>
+    <script>
+      const searchParams = new URLSearchParams(location.search);
+      let div = document.querySelector("div");
+      if (searchParams.has("subframe")) {
+        const scrolledContents = document.createElement("div");
+        scrolledContents.style.height = "100%";
+
+        div.appendChild(scrolledContents);
+        div.style.overflow = "auto";
+
+        div = scrolledContents;
+      }
+      if (searchParams.has("scrollable")) {
+        // Scrollable for dynamic toolbar purposes.
+        div.style.height = "100vh";
+      }
+      div.style.touchAction = searchParams.get("touch-action");
+      if (searchParams.has("event")) {
+        div.addEventListener("touchstart", e => {});
+      }
+    </script>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/touch.html b/mobile/android/geckoview/src/androidTest/assets/www/touch.html
new file mode 100644
index 0000000000..ba3bc098a9
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/touch.html
@@ -0,0 +1,58 @@
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <meta
+      name="viewport"
+      content="height=device-height,width=device-width,initial-scale=1.0"
+    />
+    <style type="text/css">
+      body {
+        width: 100%;
+        height: 100%;
+        margin: 0;
+        padding: 0px;
+        /* background contains one extra transparent.gif because we want trick the
+      contentful paint detection; We want to make sure the background is loaded
+      before the test starts so we always wait for the contentful paint timestamp
+      to exist, however, gradient isn't considered as contentful per spec, so Gecko
+      wouldn't generate a timestamp for it. Hence, we added a transparent gif
+      to the image list to trick the detection. */
+        background: url("/assets/www/transparent.gif"),
+          linear-gradient(135deg, red, white);
+      }
+
+      #one {
+        background-color: red;
+        width: 100%;
+        height: 33%;
+      }
+
+      #two {
+        background-color: green;
+        width: 100%;
+        height: 33%;
+      }
+
+      #three {
+        background-color: blue;
+        width: 100%;
+        height: 33%;
+      }
+    </style>
+  </head>
+  <body>
+    <div id="one"></div>
+    <div id="two"></div>
+    <div id="three"></div>
+    <script>
+      document.getElementById("two").addEventListener("touchstart", e => {
+        console.log("preventing default");
+        e.preventDefault();
+      });
+
+      document.getElementById("three").addEventListener("touchstart", e => {
+        console.log("not preventing default");
+      });
+    </script>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/touch_xorigin.html b/mobile/android/geckoview/src/androidTest/assets/www/touch_xorigin.html
new file mode 100644
index 0000000000..89f3762aef
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/touch_xorigin.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <style>
+      body,
+      html {
+        margin: 0;
+        padding: 0;
+      }
+    </style>
+  </head>
+  <body>
+    <iframe src="http://127.0.0.1:4245/assets/www/touch.html"></iframe>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/touchstart.html b/mobile/android/geckoview/src/androidTest/assets/www/touchstart.html
new file mode 100644
index 0000000000..9ee1f461a7
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/touchstart.html
@@ -0,0 +1,37 @@
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=0.5" />
+    <style type="text/css">
+      body {
+        margin: 0;
+        /* background contains one extra transparent.gif because we want trick the
+      contentful paint detection; We want to make sure the background is loaded
+      before the test starts so we always wait for the contentful paint timestamp
+      to exist, however, gradient isn't considered as contentful per spec, so Gecko
+      wouldn't generate a timestamp for it. Hence, we added a transparent gif
+      to the image list to trick the detection. */
+        background: url("/assets/www/transparent.gif"),
+          linear-gradient(135deg, red, white);
+      }
+
+      #one {
+        background-color: red;
+        width: 200%;
+        height: 100vh;
+      }
+      #two {
+        background-color: blue;
+        width: 200%;
+        height: 800vh;
+      }
+    </style>
+  </head>
+  <body>
+    <div id="one"></div>
+    <div id="two"></div>
+    <script>
+      document.getElementById("two").addEventListener("touchstart", e => {});
+    </script>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/tracemonkey.pdf b/mobile/android/geckoview/src/androidTest/assets/www/tracemonkey.pdf
new file mode 100644
index 0000000000..4dcf129d65
Binary files /dev/null and b/mobile/android/geckoview/src/androidTest/assets/www/tracemonkey.pdf differ
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/trackers.html b/mobile/android/geckoview/src/androidTest/assets/www/trackers.html
new file mode 100644
index 0000000000..56ea43979a
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/trackers.html
@@ -0,0 +1,14 @@
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <title>Trackers</title>
+  </head>
+  <body>
+    <p>Trackers</p>
+
+    <!-- test-track-simple -->
+    <script src="http://trackertest.org/tracker.js"></script>
+    <script src="https://tracking.example.com/tracker.js"></script>
+    <script src="https://itisatracker.org/tracker.js"></script>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/transparent.gif b/mobile/android/geckoview/src/androidTest/assets/www/transparent.gif
new file mode 100644
index 0000000000..e565824aaf
Binary files /dev/null and b/mobile/android/geckoview/src/androidTest/assets/www/transparent.gif differ
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/update_manifest.json b/mobile/android/geckoview/src/androidTest/assets/www/update_manifest.json
new file mode 100644
index 0000000000..7b2de1f278
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/update_manifest.json
@@ -0,0 +1,40 @@
+{
+  "addons": {
+    "update@example.com": {
+      "updates": [
+        {
+          "version": "1.0",
+          "update_link": "https://example.org/tests/junit/update-1.xpi"
+        },
+        {
+          "version": "2.0",
+          "update_link": "https://example.org/tests/junit/update-2.xpi"
+        }
+      ]
+    },
+    "update-postpone@example.com": {
+      "updates": [
+        {
+          "version": "1.0",
+          "update_link": "https://example.org/tests/junit/update-postpone-1.xpi"
+        },
+        {
+          "version": "2.0",
+          "update_link": "https://example.org/tests/junit/update-postpone-2.xpi"
+        }
+      ]
+    },
+    "update-with-perms@example.com": {
+      "updates": [
+        {
+          "version": "1.0",
+          "update_link": "https://example.org/tests/junit/update-with-perms-1.xpi"
+        },
+        {
+          "version": "2.0",
+          "update_link": "https://example.org/tests/junit/update-with-perms-2.xpi"
+        }
+      ]
+    }
+  }
+}
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/videos/gizmo.webm b/mobile/android/geckoview/src/androidTest/assets/www/videos/gizmo.webm
new file mode 100644
index 0000000000..518531a93f
Binary files /dev/null and b/mobile/android/geckoview/src/androidTest/assets/www/videos/gizmo.webm differ
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/videos/short.mp4 b/mobile/android/geckoview/src/androidTest/assets/www/videos/short.mp4
new file mode 100644
index 0000000000..a674b7eb68
Binary files /dev/null and b/mobile/android/geckoview/src/androidTest/assets/www/videos/short.mp4 differ
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/videos/video.ogg b/mobile/android/geckoview/src/androidTest/assets/www/videos/video.ogg
new file mode 100644
index 0000000000..ac7ece3519
Binary files /dev/null and b/mobile/android/geckoview/src/androidTest/assets/www/videos/video.ogg differ
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/viewport.html b/mobile/android/geckoview/src/androidTest/assets/www/viewport.html
new file mode 100644
index 0000000000..a5dfa0f64f
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/viewport.html
@@ -0,0 +1,19 @@
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <meta
+      name="viewport"
+      content="width=device-width, initial-scale=1.0, viewport-fit=cover"
+    />
+    <style type="text/css">
+      #wide {
+        background-color: rgb(200, 0, 0);
+        width: 100%;
+        height: 40px;
+      }
+    </style>
+  </head>
+  <body>
+    <div id="wide"></div>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/webm.html b/mobile/android/geckoview/src/androidTest/assets/www/webm.html
new file mode 100644
index 0000000000..f329582575
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/webm.html
@@ -0,0 +1,11 @@
+<html>
+    <head>
+        <meta charset="utf-8">
+        <title>WebM Video</title>
+    </head>
+    <body>
+        <video controls preload>
+            <source src="videos/gizmo.webm"></source>
+        </video>
+    </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/worker/open_window.html b/mobile/android/geckoview/src/androidTest/assets/www/worker/open_window.html
new file mode 100644
index 0000000000..d71eb0484d
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/worker/open_window.html
@@ -0,0 +1,10 @@
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <title>Open Window test</title>
+  </head>
+  <body>
+    <p>Hello, world!</p>
+    <script type="text/javascript" src="./open_window.js"></script>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/worker/open_window.js b/mobile/android/geckoview/src/androidTest/assets/www/worker/open_window.js
new file mode 100644
index 0000000000..921cff5b09
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/worker/open_window.js
@@ -0,0 +1,15 @@
+navigator.serviceWorker.register("./service-worker.js", {
+  scope: ".",
+});
+
+function showNotification() {
+  Notification.requestPermission(function (result) {
+    if (result === "granted") {
+      navigator.serviceWorker.ready.then(function (registration) {
+        registration.showNotification("Open Window Notification", {
+          body: "Hello",
+        });
+      });
+    }
+  });
+}
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/worker/open_window_target.html b/mobile/android/geckoview/src/androidTest/assets/www/worker/open_window_target.html
new file mode 100644
index 0000000000..14775aafac
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/worker/open_window_target.html
@@ -0,0 +1,9 @@
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <title>Open Window test target</title>
+  </head>
+  <body>
+    <p>Hello, world!</p>
+  </body>
+</html>
diff --git a/mobile/android/geckoview/src/androidTest/assets/www/worker/service-worker.js b/mobile/android/geckoview/src/androidTest/assets/www/worker/service-worker.js
new file mode 100644
index 0000000000..e3fbbb6388
--- /dev/null
+++ b/mobile/android/geckoview/src/androidTest/assets/www/worker/service-worker.js
@@ -0,0 +1,15 @@
+self.addEventListener("install", function () {
+  console.log("install");
+  self.skipWaiting();
+});
+
+self.addEventListener("activate", function (e) {
+  console.log("activate");
+  e.waitUntil(self.clients.claim());
+});
+
+self.onnotificationclick = function (event) {
+  console.log("onnotificationclick");
+  self.clients.openWindow("open_window_target.html");
+  event.notification.close();
+};
-- 
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