Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

43 files changed, 4052 insertions, 0 deletions

diff --git a/dom/media/autoplay/test/browser/audio.ogg b/dom/media/autoplay/test/browser/audio.ogg
new file mode 100644
index 0000000000..7f1833508a
--- /dev/null
+++ b/dom/media/autoplay/test/browser/audio.ogg
diff --git a/dom/media/autoplay/test/browser/browser.ini b/dom/media/autoplay/test/browser/browser.ini
new file mode 100644
index 0000000000..8bdf83859e
--- /dev/null
+++ b/dom/media/autoplay/test/browser/browser.ini
@@ -0,0 +1,27 @@
+[DEFAULT]
+subsuite = media-bc
+skip-if = (os == "win" && processor == "aarch64") # aarch64 due to 1536573
+tags = autoplay
+support-files =
+  ../../../test/gizmo.mp4
+  audio.ogg
+  file_empty.html
+  file_mediaplayback_frame.html
+  file_nonAutoplayAudio.html
+  file_video.html
+  head.js
+
+[browser_autoplay_policy_detection_global_sticky.js]
+[browser_autoplay_policy_detection_global_and_site_sticky.js]
+[browser_autoplay_policy_detection_click_to_play.js]
+[browser_autoplay_policy_play_twice.js]
+[browser_autoplay_policy_user_gestures.js]
+https_first_disabled = true
+[browser_autoplay_policy_request_permission.js]
+https_first_disabled = true
+[browser_autoplay_policy_touchScroll.js]
+https_first_disabled = true
+[browser_autoplay_policy_web_audio.js]
+[browser_autoplay_policy_web_audio_with_gum.js]
+[browser_autoplay_policy_webRTC_permission.js]
+[browser_autoplay_videoDocument.js]
diff --git a/dom/media/autoplay/test/browser/browser_autoplay_policy_detection_click_to_play.js b/dom/media/autoplay/test/browser/browser_autoplay_policy_detection_click_to_play.js
new file mode 100644
index 0000000000..576f01b1cf
--- /dev/null
+++ b/dom/media/autoplay/test/browser/browser_autoplay_policy_detection_click_to_play.js
@@ -0,0 +1,120 @@
+/**
+ * This test will check the Autoplay Policy Detection API for click-to-play
+ * blocking policy (media.autoplay.blocking_policy=2) and the blocked value set
+ * to BLOCKED (block audible) and BLOCKED_ALL (block audible & inaudible).
+ *
+ * We will create two video elements in the test page, and then click one of
+ * them. After doing that, only the element has been clicked can be allowed to
+ * autoplay, other elements should remain blocked depend on the default blocking
+ * value.
+ */
+"use strict";
+
+// TODO : remove this when it's enabled by default in bug 1812189.
+add_setup(async function setSharedPrefs() {
+  await SpecialPowers.pushPrefEnv({
+    set: [["dom.media.autoplay-policy-detection.enabled", true]],
+  });
+});
+
+async function testAutoplayPolicy(defaultPolicy) {
+  await setupTestPref(defaultPolicy);
+  let tab = await BrowserTestUtils.openNewForegroundTab(
+    window.gBrowser,
+    "about:blank"
+  );
+  await createVideoElements(tab);
+  await SpecialPowers.spawn(
+    tab.linkedBrowser,
+    [defaultPolicy],
+    defaultPolicy => {
+      is(
+        content.navigator.getAutoplayPolicy("mediaelement"),
+        defaultPolicy,
+        "Check autoplay policy by media element type is correct"
+      );
+      let videos = content.document.getElementsByTagName("video");
+      for (let video of videos) {
+        is(
+          content.navigator.getAutoplayPolicy(video),
+          defaultPolicy,
+          "Check autoplay policy by element is correct"
+        );
+      }
+    }
+  );
+
+  info("click on one video to make it play");
+  await BrowserTestUtils.synthesizeMouseAtCenter(
+    "#will-be-clicked",
+    { button: 0 },
+    tab.linkedBrowser
+  );
+
+  info("only the element has been clicked can be allowed to autoplay");
+  await SpecialPowers.spawn(
+    tab.linkedBrowser,
+    [defaultPolicy],
+    defaultPolicy => {
+      is(
+        content.navigator.getAutoplayPolicy("mediaelement"),
+        defaultPolicy,
+        "Check autoplay policy by media element type is correct"
+      );
+      let videos = content.document.getElementsByTagName("video");
+      for (let video of videos) {
+        is(
+          content.navigator.getAutoplayPolicy(video),
+          video.id === "will-be-clicked" ? "allowed" : defaultPolicy,
+          "Check autoplay policy by element is correct"
+        );
+      }
+    }
+  );
+
+  BrowserTestUtils.removeTab(tab);
+}
+
+add_task(async function testAutoplayPolicyDetectionForClickToPlay() {
+  await testAutoplayPolicy("allowed-muted");
+  await testAutoplayPolicy("disallowed");
+});
+
+// Following are helper functions
+async function setupTestPref(defaultPolicy) {
+  function policyToBlockedValue(defaultPolicy) {
+    // Value for media.autoplay.default
+    if (defaultPolicy === "allowed") {
+      return 0 /* Allowed */;
+    } else if (defaultPolicy === "allowed-muted") {
+      return 1 /* Blocked */;
+    }
+    return 5 /* Blocked All */;
+  }
+  const defaultBlocked = policyToBlockedValue(defaultPolicy);
+  info(`Set 'media.autoplay.default' to ${defaultBlocked}`);
+  await SpecialPowers.pushPrefEnv({
+    set: [
+      ["media.autoplay.default", defaultBlocked],
+      ["media.autoplay.blocking_policy", 2 /* click-to-play */],
+    ],
+  });
+}
+
+function createVideoElements(tab) {
+  info("create two video elements in the page");
+  let url = GetTestWebBasedURL("gizmo.mp4");
+  return SpecialPowers.spawn(tab.linkedBrowser, [url], url => {
+    let video1 = content.document.createElement("video");
+    video1.id = "will-be-clicked";
+    video1.controls = true;
+    video1.src = url;
+
+    let video2 = content.document.createElement("video");
+    video2.controls = true;
+    video2.src = url;
+
+    content.document.body.appendChild(video1);
+    content.document.body.appendChild(video2);
+  });
+}
diff --git a/dom/media/autoplay/test/browser/browser_autoplay_policy_detection_global_and_site_sticky.js b/dom/media/autoplay/test/browser/browser_autoplay_policy_detection_global_and_site_sticky.js
new file mode 100644
index 0000000000..828b3e0986
--- /dev/null
+++ b/dom/media/autoplay/test/browser/browser_autoplay_policy_detection_global_and_site_sticky.js
@@ -0,0 +1,168 @@
+/**
+ * This test checks whether Autoplay Policy Detection API works correctly under
+ * different situations of having global permission set for block autoplay
+ * along with different site permission setting. This test only checks the
+ * sticky user gesture blocking model.
+ */
+"use strict";
+
+const { PermissionTestUtils } = ChromeUtils.importESModule(
+  "resource://testing-common/PermissionTestUtils.sys.mjs"
+);
+
+// We can't set site permission on 'about:blank' so we use an empty page.
+const PAGE_URL = GetTestWebBasedURL("file_empty.html");
+
+add_setup(async function setSharedPrefs() {
+  await SpecialPowers.pushPrefEnv({
+    set: [
+      ["dom.media.autoplay-policy-detection.enabled", true],
+      ["media.autoplay.blocking_policy", 0],
+      ["media.autoplay.block-webaudio", true],
+    ],
+  });
+});
+
+add_task(async function testGlobalPermissionIsAllowed() {
+  await SpecialPowers.pushPrefEnv({
+    set: [["media.autoplay.default", SpecialPowers.Ci.nsIAutoplay.ALLOWED]],
+  });
+  let tab = await createTabAndSetupPolicyAssertFunc(PAGE_URL);
+  PermissionTestUtils.add(
+    tab.linkedBrowser.currentURI,
+    "autoplay-media",
+    Services.perms.DENY_ACTION
+  );
+  await SpecialPowers.spawn(tab.linkedBrowser, [], _ => {
+    info("site permission blocks audible autoplay");
+    content.assertAutoplayPolicy({
+      resultForElementType: "allowed-muted",
+      resultForElement: "allowed-muted",
+      resultForContextType: "disallowed",
+      resultForContext: "disallowed",
+    });
+  });
+  PermissionTestUtils.add(
+    tab.linkedBrowser.currentURI,
+    "autoplay-media",
+    Ci.nsIAutoplay.BLOCKED_ALL
+  );
+  await SpecialPowers.spawn(tab.linkedBrowser, [], _ => {
+    info("site permission blocks all autoplay");
+    content.assertAutoplayPolicy({
+      resultForElementType: "disallowed",
+      resultForElement: "disallowed",
+      resultForContextType: "disallowed",
+      resultForContext: "disallowed",
+    });
+
+    info(
+      "activate document by using user gesture, all autoplay will be allowed"
+    );
+    content.document.notifyUserGestureActivation();
+    content.assertAutoplayPolicy({
+      resultForElementType: "allowed",
+      resultForElement: "allowed",
+      resultForContextType: "allowed",
+      resultForContext: "allowed",
+    });
+  });
+  PermissionTestUtils.remove(tab.linkedBrowser.currentURI, "autoplay-media");
+  BrowserTestUtils.removeTab(tab);
+});
+
+add_task(async function testGlobalPermissionIsBlocked() {
+  await SpecialPowers.pushPrefEnv({
+    set: [["media.autoplay.default", SpecialPowers.Ci.nsIAutoplay.BLOCKED]],
+  });
+  let tab = await createTabAndSetupPolicyAssertFunc(PAGE_URL);
+  PermissionTestUtils.add(
+    tab.linkedBrowser.currentURI,
+    "autoplay-media",
+    Services.perms.ALLOW_ACTION
+  );
+  await SpecialPowers.spawn(tab.linkedBrowser, [], _ => {
+    info("site permission allows all autoplay");
+    content.assertAutoplayPolicy({
+      resultForElementType: "allowed",
+      resultForElement: "allowed",
+      resultForContextType: "allowed",
+      resultForContext: "allowed",
+    });
+  });
+  PermissionTestUtils.add(
+    tab.linkedBrowser.currentURI,
+    "autoplay-media",
+    Ci.nsIAutoplay.BLOCKED_ALL
+  );
+  await SpecialPowers.spawn(tab.linkedBrowser, [], _ => {
+    info("site permission blocks all autoplay");
+    content.assertAutoplayPolicy({
+      resultForElementType: "disallowed",
+      resultForElement: "disallowed",
+      resultForContextType: "disallowed",
+      resultForContext: "disallowed",
+    });
+
+    info(
+      "activate document by using user gesture, all autoplay will be allowed"
+    );
+    content.document.notifyUserGestureActivation();
+    content.assertAutoplayPolicy({
+      resultForElementType: "allowed",
+      resultForElement: "allowed",
+      resultForContextType: "allowed",
+      resultForContext: "allowed",
+    });
+  });
+  PermissionTestUtils.remove(tab.linkedBrowser.currentURI, "autoplay-media");
+  BrowserTestUtils.removeTab(tab);
+});
+
+add_task(async function testGlobalPermissionIsBlockedAll() {
+  await SpecialPowers.pushPrefEnv({
+    set: [["media.autoplay.default", SpecialPowers.Ci.nsIAutoplay.BLOCKED_ALL]],
+  });
+  let tab = await createTabAndSetupPolicyAssertFunc(PAGE_URL);
+  PermissionTestUtils.add(
+    tab.linkedBrowser.currentURI,
+    "autoplay-media",
+    Services.perms.ALLOW_ACTION
+  );
+  await SpecialPowers.spawn(tab.linkedBrowser, [], _ => {
+    info("site permission allows all autoplay");
+    content.assertAutoplayPolicy({
+      resultForElementType: "allowed",
+      resultForElement: "allowed",
+      resultForContextType: "allowed",
+      resultForContext: "allowed",
+    });
+  });
+  PermissionTestUtils.add(
+    tab.linkedBrowser.currentURI,
+    "autoplay-media",
+    Services.perms.DENY_ACTION
+  );
+  await SpecialPowers.spawn(tab.linkedBrowser, [], _ => {
+    info("site permission blocks audible autoplay");
+    content.assertAutoplayPolicy({
+      resultForElementType: "allowed-muted",
+      resultForElement: "allowed-muted",
+      resultForContextType: "disallowed",
+      resultForContext: "disallowed",
+    });
+
+    info(
+      "activate document by using user gesture, all autoplay will be allowed"
+    );
+    content.document.notifyUserGestureActivation();
+    content.assertAutoplayPolicy({
+      resultForElementType: "allowed",
+      resultForElement: "allowed",
+      resultForContextType: "allowed",
+      resultForContext: "allowed",
+    });
+  });
+  PermissionTestUtils.remove(tab.linkedBrowser.currentURI, "autoplay-media");
+  BrowserTestUtils.removeTab(tab);
+});
diff --git a/dom/media/autoplay/test/browser/browser_autoplay_policy_detection_global_sticky.js b/dom/media/autoplay/test/browser/browser_autoplay_policy_detection_global_sticky.js
new file mode 100644
index 0000000000..ab9fe6b418
--- /dev/null
+++ b/dom/media/autoplay/test/browser/browser_autoplay_policy_detection_global_sticky.js
@@ -0,0 +1,105 @@
+/**
+ * This test checks whether Autoplay Policy Detection API works correctly under
+ * different situations of having global permission set for block autoplay.
+ * This test only checks the sticky user gesture blocking model.
+ */
+"use strict";
+
+add_setup(async function setSharedPrefs() {
+  await SpecialPowers.pushPrefEnv({
+    set: [
+      ["dom.media.autoplay-policy-detection.enabled", true],
+      ["media.autoplay.blocking_policy", 0],
+      ["media.autoplay.block-webaudio", true],
+    ],
+  });
+});
+
+add_task(async function testGlobalPermissionIsAllowed() {
+  await SpecialPowers.pushPrefEnv({
+    set: [["media.autoplay.default", SpecialPowers.Ci.nsIAutoplay.ALLOWED]],
+  });
+  let tab = await createTabAndSetupPolicyAssertFunc("about:blank");
+  await SpecialPowers.spawn(tab.linkedBrowser, [], _ => {
+    info("global setting allows any autoplay");
+    content.assertAutoplayPolicy({
+      resultForElementType: "allowed",
+      resultForElement: "allowed",
+      resultForContextType: "allowed",
+      resultForContext: "allowed",
+    });
+  });
+  BrowserTestUtils.removeTab(tab);
+});
+
+add_task(async function testGlobalPermissionIsBlocked() {
+  await SpecialPowers.pushPrefEnv({
+    set: [["media.autoplay.default", SpecialPowers.Ci.nsIAutoplay.BLOCKED]],
+  });
+  let tab = await createTabAndSetupPolicyAssertFunc("about:blank");
+  await SpecialPowers.spawn(tab.linkedBrowser, [], _ => {
+    info(
+      "global setting allows inaudible autoplay but audible autoplay is still not allowed"
+    );
+    content.assertAutoplayPolicy({
+      resultForElementType: "allowed-muted",
+      resultForElement: "allowed-muted",
+      resultForContextType: "disallowed",
+      resultForContext: "disallowed",
+    });
+
+    info("tweaking video's muted attribute won't change the result");
+    content.video.muted = true;
+    is(
+      "allowed-muted",
+      content.navigator.getAutoplayPolicy(content.video),
+      "getAutoplayPolicy(video) returns correct value"
+    );
+    content.video.muted = false;
+    is(
+      "allowed-muted",
+      content.navigator.getAutoplayPolicy(content.video),
+      "getAutoplayPolicy(video) returns correct value"
+    );
+
+    info(
+      "activate document by using user gesture, all autoplay will be allowed"
+    );
+    content.document.notifyUserGestureActivation();
+    content.assertAutoplayPolicy({
+      resultForElementType: "allowed",
+      resultForElement: "allowed",
+      resultForContextType: "allowed",
+      resultForContext: "allowed",
+    });
+  });
+  BrowserTestUtils.removeTab(tab);
+});
+
+add_task(async function testGlobalPermissionIsBlockedAll() {
+  await SpecialPowers.pushPrefEnv({
+    set: [["media.autoplay.default", SpecialPowers.Ci.nsIAutoplay.BLOCKED_ALL]],
+  });
+  let tab = await createTabAndSetupPolicyAssertFunc("about:blank");
+  await SpecialPowers.spawn(tab.linkedBrowser, [], _ => {
+    info("global setting doesn't allow any autoplay");
+    content.assertAutoplayPolicy({
+      resultForElementType: "disallowed",
+      resultForElement: "disallowed",
+      resultForContextType: "disallowed",
+      resultForContext: "disallowed",
+    });
+
+    info(
+      "activate document by using user gesture, all autoplay will be allowed"
+    );
+    content.document.notifyUserGestureActivation();
+    content.assertAutoplayPolicy({
+      resultForElementType: "allowed",
+      resultForElement: "allowed",
+      resultForContextType: "allowed",
+      resultForContext: "allowed",
+    });
+  });
+  BrowserTestUtils.removeTab(tab);
+});
diff --git a/dom/media/autoplay/test/browser/browser_autoplay_policy_play_twice.js b/dom/media/autoplay/test/browser/browser_autoplay_policy_play_twice.js
new file mode 100644
index 0000000000..7130e6e781
--- /dev/null
+++ b/dom/media/autoplay/test/browser/browser_autoplay_policy_play_twice.js
@@ -0,0 +1,54 @@
+const VIDEO_PAGE = GetTestWebBasedURL("file_video.html");
+
+function setup_test_preference(enableUserGesture) {
+  let state = enableUserGesture ? "enable" : "disable";
+  info(`- set pref : ${state} user gesture -`);
+  return SpecialPowers.pushPrefEnv({
+    set: [
+      ["media.autoplay.default", SpecialPowers.Ci.nsIAutoplay.BLOCKED],
+      ["media.autoplay.blocking_policy", enableUserGesture ? 0 : 1],
+    ],
+  });
+}
+
+async function allow_play_for_played_video() {
+  info("- open new tab  -");
+  let tab = await BrowserTestUtils.openNewForegroundTab(
+    window.gBrowser,
+    "about:blank"
+  );
+  BrowserTestUtils.loadURIString(tab.linkedBrowser, VIDEO_PAGE);
+  await BrowserTestUtils.browserLoaded(tab.linkedBrowser);
+
+  info("- simulate user-click to start video -");
+  await BrowserTestUtils.synthesizeMouseAtCenter(
+    "#v",
+    { button: 0 },
+    tab.linkedBrowser
+  );
+
+  async function play_video_again() {
+    let video = content.document.getElementById("v");
+    ok(!video.paused, "video is playing");
+
+    info("- call video play() again -");
+    try {
+      await video.play();
+      ok(true, "success to resolve play promise");
+    } catch (e) {
+      ok(false, "promise should not be rejected");
+    }
+  }
+  await SpecialPowers.spawn(tab.linkedBrowser, [], play_video_again);
+
+  info("- remove tab -");
+  BrowserTestUtils.removeTab(tab);
+}
+
+add_task(async function start_test() {
+  await setup_test_preference(true);
+  await allow_play_for_played_video();
+
+  await setup_test_preference(false);
+  await allow_play_for_played_video();
+});
diff --git a/dom/media/autoplay/test/browser/browser_autoplay_policy_request_permission.js b/dom/media/autoplay/test/browser/browser_autoplay_policy_request_permission.js
new file mode 100644
index 0000000000..5cdb3ffe6c
--- /dev/null
+++ b/dom/media/autoplay/test/browser/browser_autoplay_policy_request_permission.js
@@ -0,0 +1,269 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/
+ */
+
+"use strict";
+
+const { PermissionTestUtils } = ChromeUtils.importESModule(
+  "resource://testing-common/PermissionTestUtils.sys.mjs"
+);
+
+const VIDEO_PAGE_URI = GetTestWebBasedURL("file_empty.html");
+const SAME_ORIGIN_FRAME_URI = GetTestWebBasedURL(
+  "file_mediaplayback_frame.html"
+);
+const DIFFERENT_ORIGIN_FRAME_URI = GetTestWebBasedURL(
+  "file_mediaplayback_frame.html",
+  { crossOrigin: true }
+);
+
+const gPermissionName = "autoplay-media";
+
+function setTestingPreferences(defaultSetting) {
+  info(`set default autoplay setting to '${defaultSetting}'`);
+  let defaultValue =
+    defaultSetting == "blocked"
+      ? SpecialPowers.Ci.nsIAutoplay.BLOCKED
+      : SpecialPowers.Ci.nsIAutoplay.ALLOWED;
+  return SpecialPowers.pushPrefEnv({
+    set: [
+      ["media.autoplay.default", defaultValue],
+      ["media.autoplay.blocking_policy", 0],
+      ["media.autoplay.block-event.enabled", true],
+    ],
+  });
+}
+
+async function testAutoplayExistingPermission(args) {
+  info("- Starting '" + args.name + "' -");
+  await BrowserTestUtils.withNewTab(
+    {
+      gBrowser,
+      url: VIDEO_PAGE_URI,
+    },
+    async browser => {
+      let promptShowing = () =>
+        PopupNotifications.getNotification("autoplay-media", browser);
+
+      PermissionTestUtils.add(
+        browser.currentURI,
+        "autoplay-media",
+        args.permission
+      );
+      ok(!promptShowing(), "Should not be showing permission prompt yet");
+
+      await loadAutoplayVideo(browser, args);
+      await checkVideoDidPlay(browser, args);
+
+      // Reset permission.
+      PermissionTestUtils.remove(browser.currentURI, "autoplay-media");
+
+      info("- Finished '" + args.name + "' -");
+    }
+  );
+}
+
+async function testAutoplayExistingPermissionAgainstDefaultSetting(args) {
+  await setTestingPreferences(args.defaultSetting);
+  await testAutoplayExistingPermission(args);
+}
+
+// Test the simple ALLOW/BLOCK cases; when permission is already set to ALLOW,
+// we shoud be able to autoplay via calling play(), or via the autoplay attribute,
+// and when it's set to BLOCK, we should not.
+add_task(async () => {
+  await setTestingPreferences("blocked" /* default setting */);
+  await testAutoplayExistingPermission({
+    name: "Prexisting allow permission autoplay attribute",
+    permission: Services.perms.ALLOW_ACTION,
+    shouldPlay: true,
+    mode: "autoplay attribute",
+  });
+  await testAutoplayExistingPermission({
+    name: "Prexisting allow permission call play",
+    permission: Services.perms.ALLOW_ACTION,
+    shouldPlay: true,
+    mode: "call play",
+  });
+  await testAutoplayExistingPermission({
+    name: "Prexisting block permission autoplay attribute",
+    permission: Services.perms.DENY_ACTION,
+    shouldPlay: false,
+    mode: "autoplay attribute",
+  });
+  await testAutoplayExistingPermission({
+    name: "Prexisting block permission call play",
+    permission: Services.perms.DENY_ACTION,
+    shouldPlay: false,
+    mode: "call play",
+  });
+});
+
+/**
+ * These tests are used to ensure the autoplay setting for specific site can
+ * always override the default autoplay setting.
+ */
+add_task(async () => {
+  await testAutoplayExistingPermissionAgainstDefaultSetting({
+    name: "Site has prexisting allow permission but default setting is 'blocked'",
+    permission: Services.perms.ALLOW_ACTION,
+    defaultSetting: "blocked",
+    shouldPlay: true,
+    mode: "autoplay attribute",
+  });
+  await testAutoplayExistingPermissionAgainstDefaultSetting({
+    name: "Site has prexisting block permission but default setting is 'allowed'",
+    permission: Services.perms.DENY_ACTION,
+    defaultSetting: "allowed",
+    shouldPlay: false,
+    mode: "autoplay attribute",
+  });
+});
+
+/**
+ * The permission of the main page's domain would determine the final autoplay
+ * result when a page contains multiple iframes which are in the different
+ * domain from the main pages's.
+ * That means we would not check the permission of iframe's domain, even if it
+ * has been set.
+ */
+add_task(async function testExistingPermissionForIframe() {
+  await setTestingPreferences("blocked" /* default setting */);
+  await testAutoplayExistingPermissionForIframe({
+    name: "Prexisting ALLOW for main page with same origin iframe",
+    permissionForParent: Services.perms.ALLOW_ACTION,
+    isIframeDifferentOrgin: true,
+    shouldPlay: true,
+  });
+
+  await testAutoplayExistingPermissionForIframe({
+    name: "Prexisting ALLOW for main page with different origin iframe",
+    permissionForParent: Services.perms.ALLOW_ACTION,
+    isIframeDifferentOrgin: false,
+    shouldPlay: true,
+  });
+
+  await testAutoplayExistingPermissionForIframe({
+    name: "Prexisting ALLOW for main page, prexisting DENY for different origin iframe",
+    permissionForParent: Services.perms.ALLOW_ACTION,
+    permissionForChild: Services.perms.DENY_ACTION,
+    isIframeDifferentOrgin: false,
+    shouldPlay: true,
+  });
+
+  await testAutoplayExistingPermissionForIframe({
+    name: "Prexisting DENY for main page, prexisting ALLOW for different origin iframe",
+    permissionForParent: Services.perms.DENY_ACTION,
+    permissionForChild: Services.perms.ALLOW_ACTION,
+    isIframeDifferentOrgin: false,
+    shouldPlay: false,
+  });
+});
+
+/**
+ * The following are helper functions.
+ */
+async function testAutoplayExistingPermissionForIframe(args) {
+  info(`Start test : ${args.name}`);
+  await BrowserTestUtils.withNewTab(
+    {
+      gBrowser,
+      url: VIDEO_PAGE_URI,
+    },
+    async browser => {
+      setupSitesPermission(browser, args);
+
+      await createIframe(browser, args);
+      await checkAutplayInIframe(browser, args);
+
+      clearSitesPermission(browser, args);
+    }
+  );
+  info(`Finish test : ${args.name}`);
+}
+
+function setupSitesPermission(
+  browser,
+  {
+    isIframeDifferentOrgin,
+    permissionForParent,
+    permissionForChild = Services.perms.UNKNOWN_ACTION,
+  }
+) {
+  info(`setupSitesPermission`);
+  // Set permission for the main page's domain
+  setPermissionForBrowser(browser, browser.currentURI, permissionForParent);
+  if (isIframeDifferentOrgin) {
+    // Set permission for different domain of the iframe
+    setPermissionForBrowser(
+      browser,
+      DIFFERENT_ORIGIN_FRAME_URI,
+      permissionForChild
+    );
+  }
+}
+
+function clearSitesPermission(browser, { isIframeDifferentOrgin }) {
+  info(`clearSitesPermission`);
+  // Clear permission for the main page's domain
+  setPermissionForBrowser(
+    browser,
+    browser.currentURI,
+    Services.perms.UNKNOWN_ACTION
+  );
+  if (isIframeDifferentOrgin) {
+    // Clear permission for different domain of the iframe
+    setPermissionForBrowser(
+      browser,
+      DIFFERENT_ORIGIN_FRAME_URI,
+      Services.perms.UNKNOWN_ACTION
+    );
+  }
+}
+
+function setPermissionForBrowser(browser, uri, permValue) {
+  const promptShowing = () =>
+    PopupNotifications.getNotification(gPermissionName, browser);
+  PermissionTestUtils.add(uri, gPermissionName, permValue);
+  ok(!promptShowing(), "Should not be showing permission prompt yet");
+  is(
+    PermissionTestUtils.testExactPermission(uri, gPermissionName),
+    permValue,
+    "Set permission correctly"
+  );
+}
+
+function createIframe(browser, { isIframeDifferentOrgin }) {
+  const iframeURL = isIframeDifferentOrgin
+    ? DIFFERENT_ORIGIN_FRAME_URI
+    : SAME_ORIGIN_FRAME_URI;
+  return SpecialPowers.spawn(browser, [iframeURL], async url => {
+    info(`Create iframe and wait until it finsihes loading`);
+    const iframe = content.document.createElement("iframe");
+    iframe.src = url;
+    content.document.body.appendChild(iframe);
+    await new Promise(r => (iframe.onload = r));
+  });
+}
+
+function checkAutplayInIframe(browser, args) {
+  return SpecialPowers.spawn(browser, [args], async ({ shouldPlay }) => {
+    info(`check if media in iframe can start playing`);
+    const iframe = content.document.getElementsByTagName("iframe")[0];
+    if (!iframe) {
+      ok(false, `can not get the iframe!`);
+      return;
+    }
+    iframe.contentWindow.postMessage("play", "*");
+    await new Promise(r => {
+      content.onmessage = event => {
+        if (shouldPlay) {
+          is(event.data, "played", `played media in iframe`);
+        } else {
+          is(event.data, "blocked", `blocked media in iframe`);
+        }
+        r();
+      };
+    });
+  });
+}
diff --git a/dom/media/autoplay/test/browser/browser_autoplay_policy_touchScroll.js b/dom/media/autoplay/test/browser/browser_autoplay_policy_touchScroll.js
new file mode 100644
index 0000000000..fa28bf2943
--- /dev/null
+++ b/dom/media/autoplay/test/browser/browser_autoplay_policy_touchScroll.js
@@ -0,0 +1,103 @@
+/**
+ * This test is used to ensure that touch in point can activate document and
+ * allow autoplay, but touch scroll can't activate document.
+ */
+/* eslint-disable mozilla/no-arbitrary-setTimeout */
+"use strict";
+
+const PAGE = GetTestWebBasedURL("file_nonAutoplayAudio.html");
+
+function checkMediaPlayingState(isPlaying) {
+  let audio = content.document.getElementById("testAudio");
+  if (!audio) {
+    ok(false, "can't get the audio element!");
+  }
+
+  is(!audio.paused, isPlaying, "media playing state is correct.");
+}
+
+async function callMediaPlay(shouldStartPlaying) {
+  let audio = content.document.getElementById("testAudio");
+  if (!audio) {
+    ok(false, "can't get the audio element!");
+  }
+
+  info(`call media.play().`);
+  let playPromise = new Promise((resolve, reject) => {
+    audio.play().then(() => {
+      audio.isPlayStarted = true;
+      resolve();
+    });
+    content.setTimeout(() => {
+      if (audio.isPlayStarted) {
+        return;
+      }
+      reject();
+    }, 3000);
+  });
+
+  let isStartPlaying = await playPromise.then(
+    () => true,
+    () => false
+  );
+  is(
+    isStartPlaying,
+    shouldStartPlaying,
+    "media is " + (isStartPlaying ? "" : "not ") + "playing."
+  );
+}
+
+async function synthesizeTouchScroll(target, browser) {
+  const offset = 100;
+  await BrowserTestUtils.synthesizeTouch(
+    target,
+    0,
+    0,
+    { type: "touchstart" },
+    browser
+  );
+  await BrowserTestUtils.synthesizeTouch(
+    target,
+    offset / 2,
+    offset / 2,
+    { type: "touchmove" },
+    browser
+  );
+  await BrowserTestUtils.synthesizeTouch(
+    target,
+    offset,
+    offset,
+    { type: "touchend" },
+    browser
+  );
+}
+
+add_task(async function setup_test_preference() {
+  return SpecialPowers.pushPrefEnv({
+    set: [
+      ["media.autoplay.default", SpecialPowers.Ci.nsIAutoplay.BLOCKED],
+      ["media.autoplay.blocking_policy", 0],
+    ],
+  });
+});
+
+add_task(async function testTouchScroll() {
+  await BrowserTestUtils.withNewTab(
+    {
+      gBrowser,
+      url: PAGE,
+    },
+    async browser => {
+      info(`- media should not start playing -`);
+      await SpecialPowers.spawn(browser, [false], checkMediaPlayingState);
+
+      info(`- simulate touch scroll which should not activate document -`);
+      await synthesizeTouchScroll("#testAudio", browser);
+      await SpecialPowers.spawn(browser, [false], callMediaPlay);
+
+      info(`- simulate touch at a point which should activate document -`);
+      await BrowserTestUtils.synthesizeTouch("#testAudio", 0, 0, {}, browser);
+      await SpecialPowers.spawn(browser, [true], callMediaPlay);
+    }
+  );
+});
diff --git a/dom/media/autoplay/test/browser/browser_autoplay_policy_user_gestures.js b/dom/media/autoplay/test/browser/browser_autoplay_policy_user_gestures.js
new file mode 100644
index 0000000000..2b9d8c1158
--- /dev/null
+++ b/dom/media/autoplay/test/browser/browser_autoplay_policy_user_gestures.js
@@ -0,0 +1,277 @@
+/* eslint-disable mozilla/no-arbitrary-setTimeout */
+
+const VIDEO_PAGE = GetTestWebBasedURL("file_video.html");
+
+const UserGestures = {
+  MOUSE_CLICK: "mouse-click",
+  MOUSE_MOVE: "mouse-move",
+  KEYBOARD_PRESS: "keyboard-press",
+};
+
+const UserGestureTests = [
+  { type: UserGestures.MOUSE_CLICK, isActivationGesture: true },
+  { type: UserGestures.MOUSE_MOVE, isActivationGesture: false },
+  // test different keycode here. printable key, non-printable key and other
+  // special keys.
+  {
+    type: UserGestures.KEYBOARD_PRESS,
+    isActivationGesture: true,
+    keyCode: "a",
+  },
+  {
+    type: UserGestures.KEYBOARD_PRESS,
+    isActivationGesture: false,
+    keyCode: "VK_ESCAPE",
+  },
+  {
+    type: UserGestures.KEYBOARD_PRESS,
+    isActivationGesture: true,
+    keyCode: "VK_RETURN",
+  },
+  {
+    type: UserGestures.KEYBOARD_PRESS,
+    isActivationGesture: true,
+    keyCode: "VK_SPACE",
+  },
+];
+
+/**
+ * This test is used to ensure we would stop blocking autoplay after document
+ * has been activated by user gestures. We would treat mouse clicking, key board
+ * pressing (printable keys or carriage return) as valid user gesture input.
+ */
+add_task(async function startTestUserGestureInput() {
+  info("- setup test preference -");
+  await setupTestPreferences();
+
+  info("- test play when page doesn't be activated -");
+  await testPlayWithoutUserGesture();
+
+  info("- test play after page got user gesture -");
+  for (let idx = 0; idx < UserGestureTests.length; idx++) {
+    info("- test play after page got user gesture -");
+    await testPlayWithUserGesture(UserGestureTests[idx]);
+
+    info("- test web audio with user gesture -");
+    await testWebAudioWithUserGesture(UserGestureTests[idx]);
+  }
+});
+
+/**
+ * testing helper functions
+ */
+function setupTestPreferences() {
+  return SpecialPowers.pushPrefEnv({
+    set: [
+      ["media.autoplay.default", SpecialPowers.Ci.nsIAutoplay.BLOCKED],
+      ["media.autoplay.blocking_policy", 0],
+      ["media.autoplay.block-event.enabled", true],
+      ["media.autoplay.block-webaudio", true],
+    ],
+  });
+}
+
+function simulateUserGesture(gesture, targetBrowser) {
+  info(`- simulate ${gesture.type} event -`);
+  switch (gesture.type) {
+    case UserGestures.MOUSE_CLICK:
+      return BrowserTestUtils.synthesizeMouseAtCenter(
+        "body",
+        { button: 0 },
+        targetBrowser
+      );
+    case UserGestures.MOUSE_MOVE:
+      return BrowserTestUtils.synthesizeMouseAtCenter(
+        "body",
+        { type: "mousemove" },
+        targetBrowser
+      );
+    case UserGestures.KEYBOARD_PRESS:
+      info(`- keycode=${gesture.keyCode} -`);
+      return BrowserTestUtils.synthesizeKey(gesture.keyCode, {}, targetBrowser);
+    default:
+      ok(false, "undefined user gesture");
+      return false;
+  }
+}
+
+async function testPlayWithoutUserGesture() {
+  info("- open new tab -");
+  let tab = await BrowserTestUtils.openNewForegroundTab(
+    window.gBrowser,
+    "about:blank"
+  );
+  BrowserTestUtils.loadURIString(tab.linkedBrowser, VIDEO_PAGE);
+  await BrowserTestUtils.browserLoaded(tab.linkedBrowser);
+
+  async function checkAutoplayKeyword() {
+    info("- create an new autoplay video -");
+    let video = content.document.createElement("video");
+    video.src = "gizmo.mp4";
+    video.autoplay = true;
+    let canplayPromise = new Promise(function (resolve) {
+      video.addEventListener(
+        "canplaythrough",
+        function () {
+          resolve();
+        },
+        { once: true }
+      );
+    });
+    content.document.body.appendChild(video);
+
+    info("- can't autoplay without user activation -");
+    await canplayPromise;
+    ok(video.paused, "video can't start without user input.");
+  }
+  await SpecialPowers.spawn(tab.linkedBrowser, [], checkAutoplayKeyword);
+
+  async function playVideo() {
+    let video = content.document.getElementById("v");
+    info("- call play() without user activation -");
+    await video.play().catch(function () {
+      ok(video.paused, "video can't start play without user input.");
+    });
+  }
+  await SpecialPowers.spawn(tab.linkedBrowser, [], playVideo);
+
+  info("- remove tab -");
+  BrowserTestUtils.removeTab(tab);
+}
+
+async function testPlayWithUserGesture(gesture) {
+  info("- open new tab -");
+  let tab = await BrowserTestUtils.openNewForegroundTab(
+    window.gBrowser,
+    "about:blank"
+  );
+  BrowserTestUtils.loadURIString(tab.linkedBrowser, VIDEO_PAGE);
+  await BrowserTestUtils.browserLoaded(tab.linkedBrowser);
+
+  info("- simulate user gesture -");
+  await simulateUserGesture(gesture, tab.linkedBrowser);
+
+  info("- call play() -");
+  async function playVideo(gesture) {
+    let video = content.document.getElementById("v");
+    try {
+      await video.play();
+      ok(gesture.isActivationGesture, "user gesture can activate the page");
+      ok(!video.paused, "video starts playing.");
+    } catch (e) {
+      ok(
+        !gesture.isActivationGesture,
+        "user gesture can not activate the page"
+      );
+      ok(video.paused, "video can not start playing.");
+    }
+  }
+
+  await SpecialPowers.spawn(tab.linkedBrowser, [gesture], playVideo);
+
+  info("- remove tab -");
+  BrowserTestUtils.removeTab(tab);
+}
+
+function createAudioContext() {
+  content.ac = new content.AudioContext();
+  let ac = content.ac;
+  ac.resumePromises = [];
+  ac.stateChangePromise = new Promise(resolve => {
+    ac.addEventListener(
+      "statechange",
+      function () {
+        resolve();
+      },
+      { once: true }
+    );
+  });
+  ac.notAllowedToStart = new Promise(resolve => {
+    ac.addEventListener(
+      "blocked",
+      function () {
+        resolve();
+      },
+      { once: true }
+    );
+  });
+}
+
+function resumeWithoutExpectedSuccess() {
+  let ac = content.ac;
+  let promise = ac.resume();
+  ac.resumePromises.push(promise);
+  return new Promise((resolve, reject) => {
+    content.setTimeout(() => {
+      if (ac.state == "suspended") {
+        ok(true, "audio context is still suspended");
+        resolve();
+      } else {
+        reject("audio context should not be allowed to start");
+      }
+    }, 2000);
+  });
+}
+
+function resumeWithExpectedSuccess() {
+  let ac = content.ac;
+  ac.resumePromises.push(ac.resume());
+  return Promise.all(ac.resumePromises).then(() => {
+    ok(ac.state == "running", "audio context starts running");
+  });
+}
+
+async function testWebAudioWithUserGesture(gesture) {
+  info("- open new tab -");
+  let tab = await BrowserTestUtils.openNewForegroundTab(
+    window.gBrowser,
+    "about:blank"
+  );
+  info("- create audio context -");
+  await SpecialPowers.spawn(tab.linkedBrowser, [], () => {
+    content.ac = new content.AudioContext();
+    let ac = content.ac;
+    ac.resumePromises = [];
+    return new Promise(resolve => {
+      ac.addEventListener(
+        "blocked",
+        function () {
+          Assert.equal(
+            ac.state,
+            "suspended",
+            `AudioContext is not started yet.`
+          );
+          resolve();
+        },
+        { once: true }
+      );
+    });
+  });
+
+  info("- calling resume() -");
+  try {
+    await SpecialPowers.spawn(
+      tab.linkedBrowser,
+      [],
+      resumeWithoutExpectedSuccess
+    );
+  } catch (error) {
+    ok(false, error.toString());
+  }
+
+  info("- simulate user gesture -");
+  await simulateUserGesture(gesture, tab.linkedBrowser);
+
+  info("- calling resume() again");
+  try {
+    let resumeFunc = gesture.isActivationGesture
+      ? resumeWithExpectedSuccess
+      : resumeWithoutExpectedSuccess;
+    await SpecialPowers.spawn(tab.linkedBrowser, [], resumeFunc);
+  } catch (error) {
+    ok(false, error.toString());
+  }
+
+  info("- remove tab -");
+  await BrowserTestUtils.removeTab(tab);
+}
diff --git a/dom/media/autoplay/test/browser/browser_autoplay_policy_webRTC_permission.js b/dom/media/autoplay/test/browser/browser_autoplay_policy_webRTC_permission.js
new file mode 100644
index 0000000000..8afae4d08e
--- /dev/null
+++ b/dom/media/autoplay/test/browser/browser_autoplay_policy_webRTC_permission.js
@@ -0,0 +1,67 @@
+/**
+ * This test is used to ensure site which has granted 'camera' or 'microphone'
+ * or 'screen' permission could be allowed to autoplay.
+ */
+"use strict";
+
+const { PermissionTestUtils } = ChromeUtils.importESModule(
+  "resource://testing-common/PermissionTestUtils.sys.mjs"
+);
+
+const VIDEO_PAGE = GetTestWebBasedURL("file_empty.html");
+
+add_task(() => {
+  return SpecialPowers.pushPrefEnv({
+    set: [
+      ["media.autoplay.default", SpecialPowers.Ci.nsIAutoplay.BLOCKED],
+      ["media.autoplay.blocking_policy", 0],
+      ["media.autoplay.block-event.enabled", true],
+    ],
+  });
+});
+
+async function testAutoplayWebRTCPermission(args) {
+  info(`- Starting ${args.name} -`);
+  await BrowserTestUtils.withNewTab(
+    {
+      gBrowser,
+      url: VIDEO_PAGE,
+    },
+    async browser => {
+      PermissionTestUtils.add(
+        browser.currentURI,
+        args.permission,
+        Services.perms.ALLOW_ACTION
+      );
+
+      await loadAutoplayVideo(browser, args);
+      await checkVideoDidPlay(browser, args);
+
+      // Reset permission.
+      PermissionTestUtils.remove(browser.currentURI, args.permission);
+
+      info(`- Finished ${args.name} -`);
+    }
+  );
+}
+
+add_task(async function start_test() {
+  await testAutoplayWebRTCPermission({
+    name: "Site with camera permission",
+    permission: "camera",
+    shouldPlay: true,
+    mode: "call play",
+  });
+  await testAutoplayWebRTCPermission({
+    name: "Site with microphone permission",
+    permission: "microphone",
+    shouldPlay: true,
+    mode: "call play",
+  });
+  await testAutoplayWebRTCPermission({
+    name: "Site with screen permission",
+    permission: "screen",
+    shouldPlay: true,
+    mode: "call play",
+  });
+});
diff --git a/dom/media/autoplay/test/browser/browser_autoplay_policy_web_audio.js b/dom/media/autoplay/test/browser/browser_autoplay_policy_web_audio.js
new file mode 100644
index 0000000000..b6e1133dd1
--- /dev/null
+++ b/dom/media/autoplay/test/browser/browser_autoplay_policy_web_audio.js
@@ -0,0 +1,217 @@
+/**
+ * This test is used for testing whether WebAudio can be started correctly in
+ * different scenarios, such as
+ * 1) site has existing 'autoplay-media' permission for allowing autoplay
+ * 2) site has existing 'autoplay-media' permission for blocking autoplay
+ * 3) site doesn't have permission, start audio context by calling resume() or
+ *    AudioScheduledNode.start() after granting user activation.
+ */
+"use strict";
+
+const { PermissionTestUtils } = ChromeUtils.importESModule(
+  "resource://testing-common/PermissionTestUtils.sys.mjs"
+);
+
+const PAGE = GetTestWebBasedURL("file_empty.html");
+
+function setup_test_preference() {
+  return SpecialPowers.pushPrefEnv({
+    set: [
+      ["media.autoplay.default", SpecialPowers.Ci.nsIAutoplay.BLOCKED],
+      ["media.autoplay.blocking_policy", 0],
+      ["media.autoplay.block-webaudio", true],
+      ["media.autoplay.block-event.enabled", true],
+    ],
+  });
+}
+
+function createAudioContext() {
+  content.ac = new content.AudioContext();
+  const ac = content.ac;
+
+  ac.allowedToStart = new Promise(resolve => {
+    ac.addEventListener(
+      "statechange",
+      function () {
+        if (ac.state === "running") {
+          resolve();
+        }
+      },
+      { once: true }
+    );
+  });
+
+  ac.notAllowedToStart = new Promise(resolve => {
+    ac.addEventListener(
+      "blocked",
+      function () {
+        resolve();
+      },
+      { once: true }
+    );
+  });
+}
+
+async function checkIfAudioContextIsAllowedToStart(isAllowedToStart) {
+  const ac = content.ac;
+  if (isAllowedToStart) {
+    await ac.allowedToStart;
+    ok(ac.state === "running", `AudioContext is running.`);
+  } else {
+    await ac.notAllowedToStart;
+    ok(ac.state === "suspended", `AudioContext is not started yet.`);
+  }
+}
+
+async function resumeAudioContext(isAllowedToStart) {
+  const ac = content.ac;
+  const resumePromise = ac.resume();
+  const blockedPromise = new Promise(resolve => {
+    ac.addEventListener(
+      "blocked",
+      function () {
+        resolve();
+      },
+      { once: true }
+    );
+  });
+
+  if (isAllowedToStart) {
+    await resumePromise;
+    ok(true, `successfully resume AudioContext.`);
+  } else {
+    await blockedPromise;
+    ok(true, `resume is blocked because AudioContext is not allowed to start.`);
+  }
+}
+
+function startAudioContext(method) {
+  const ac = content.ac;
+  if (method == "AudioContext") {
+    info(`using AudioContext.resume() to start AudioContext`);
+    ac.resume();
+    return;
+  }
+  info(`using ${method}.start() to start AudioContext`);
+  let node;
+  switch (method) {
+    case "AudioBufferSourceNode":
+      node = ac.createBufferSource();
+      break;
+    case "ConstantSourceNode":
+      node = ac.createConstantSource();
+      break;
+    case "OscillatorNode":
+      node = ac.createOscillator();
+      break;
+    default:
+      ok(false, "undefined AudioScheduledSourceNode type");
+      return;
+  }
+  node.connect(ac.destination);
+  node.start();
+}
+
+async function testAutoplayExistingPermission({ name, permission }) {
+  info(`- starting \"${name}\" -`);
+  const tab = await BrowserTestUtils.openNewForegroundTab(
+    window.gBrowser,
+    PAGE
+  );
+  const browser = tab.linkedBrowser;
+
+  info(`- set the 'autoplay-media' permission -`);
+  const promptShow = () =>
+    PopupNotifications.getNotification("autoplay-media", browser);
+  PermissionTestUtils.add(browser.currentURI, "autoplay-media", permission);
+  ok(!promptShow(), `should not be showing permission prompt yet`);
+
+  info(`- create audio context -`);
+  await SpecialPowers.spawn(browser, [], createAudioContext);
+
+  info(`- check AudioContext status -`);
+  const isAllowedToStart = permission === Services.perms.ALLOW_ACTION;
+  await SpecialPowers.spawn(
+    browser,
+    [isAllowedToStart],
+    checkIfAudioContextIsAllowedToStart
+  );
+  await SpecialPowers.spawn(browser, [isAllowedToStart], resumeAudioContext);
+
+  info(`- remove tab -`);
+  PermissionTestUtils.remove(browser.currentURI, "autoplay-media");
+  await BrowserTestUtils.removeTab(tab);
+}
+
+async function testAutoplayUnknownPermission({ name, method }) {
+  info(`- starting \"${name}\" -`);
+  const tab = await BrowserTestUtils.openNewForegroundTab(
+    window.gBrowser,
+    PAGE
+  );
+  const browser = tab.linkedBrowser;
+
+  info(`- set the 'autoplay-media' permission to UNKNOWN -`);
+  const promptShow = () =>
+    PopupNotifications.getNotification("autoplay-media", browser);
+  PermissionTestUtils.add(
+    browser.currentURI,
+    "autoplay-media",
+    Services.perms.UNKNOWN_ACTION
+  );
+  ok(!promptShow(), `should not be showing permission prompt yet`);
+
+  info(`- create AudioContext which should not start -`);
+  await SpecialPowers.spawn(browser, [], createAudioContext);
+  await SpecialPowers.spawn(
+    browser,
+    [false],
+    checkIfAudioContextIsAllowedToStart
+  );
+
+  info(`- simulate user activate the page -`);
+  await SpecialPowers.spawn(browser, [], () => {
+    content.document.notifyUserGestureActivation();
+  });
+
+  info(`- try to start AudioContext -`);
+  await SpecialPowers.spawn(browser, [method], startAudioContext);
+
+  info(`- check AudioContext status -`);
+  await SpecialPowers.spawn(
+    browser,
+    [true],
+    checkIfAudioContextIsAllowedToStart
+  );
+  await SpecialPowers.spawn(browser, [true], resumeAudioContext);
+
+  info(`- remove tab -`);
+  PermissionTestUtils.remove(browser.currentURI, "autoplay-media");
+  await BrowserTestUtils.removeTab(tab);
+}
+
+add_task(async function start_tests() {
+  info("- setup test preference -");
+  await setup_test_preference();
+
+  await testAutoplayExistingPermission({
+    name: "Prexisting allow permission",
+    permission: Services.perms.ALLOW_ACTION,
+  });
+  await testAutoplayExistingPermission({
+    name: "Prexisting block permission",
+    permission: Services.perms.DENY_ACTION,
+  });
+  const startMethods = [
+    "AudioContext",
+    "AudioBufferSourceNode",
+    "ConstantSourceNode",
+    "OscillatorNode",
+  ];
+  for (let method of startMethods) {
+    await testAutoplayUnknownPermission({
+      name: "Unknown permission and start AudioContext after granting user activation",
+      method,
+    });
+  }
+});
diff --git a/dom/media/autoplay/test/browser/browser_autoplay_policy_web_audio_with_gum.js b/dom/media/autoplay/test/browser/browser_autoplay_policy_web_audio_with_gum.js
new file mode 100644
index 0000000000..45d5c71a52
--- /dev/null
+++ b/dom/media/autoplay/test/browser/browser_autoplay_policy_web_audio_with_gum.js
@@ -0,0 +1,174 @@
+/* eslint-disable mozilla/no-arbitrary-setTimeout */
+
+/**
+ * This test is used to ensure web audio can be allowed to start when we have
+ * GUM permission.
+ */
+add_task(async function startTestingWebAudioWithGUM() {
+  info("- setup test preference -");
+  await setupTestPreferences();
+
+  info("- test web audio with gUM success -");
+  await testWebAudioWithGUM({
+    constraints: { audio: true },
+    shouldAllowStartingContext: true,
+  });
+  await testWebAudioWithGUM({
+    constraints: { video: true },
+    shouldAllowStartingContext: true,
+  });
+  await testWebAudioWithGUM({
+    constraints: { video: true, audio: true },
+    shouldAllowStartingContext: true,
+  });
+
+  await SpecialPowers.pushPrefEnv({
+    set: [["media.navigator.permission.force", true]],
+  }).then(async function () {
+    info("- test web audio with gUM denied -");
+    await testWebAudioWithGUM({
+      constraints: { video: true },
+      shouldAllowStartingContext: false,
+    });
+    await testWebAudioWithGUM({
+      constraints: { audio: true },
+      shouldAllowStartingContext: false,
+    });
+    await testWebAudioWithGUM({
+      constraints: { video: true, audio: true },
+      shouldAllowStartingContext: false,
+    });
+  });
+});
+
+/**
+ * testing helper functions
+ */
+function setupTestPreferences() {
+  return SpecialPowers.pushPrefEnv({
+    set: [
+      ["media.autoplay.default", SpecialPowers.Ci.nsIAutoplay.BLOCKED],
+      ["media.autoplay.blocking_policy", 0],
+      ["media.autoplay.block-event.enabled", true],
+      ["media.autoplay.block-webaudio", true],
+      ["media.navigator.permission.fake", true],
+    ],
+  });
+}
+
+function createAudioContext() {
+  content.ac = new content.AudioContext();
+  let ac = content.ac;
+  ac.resumePromises = [];
+  ac.stateChangePromise = new Promise(resolve => {
+    ac.addEventListener(
+      "statechange",
+      function () {
+        resolve();
+      },
+      { once: true }
+    );
+  });
+  ac.notAllowedToStart = new Promise(resolve => {
+    ac.addEventListener(
+      "blocked",
+      function () {
+        resolve();
+      },
+      { once: true }
+    );
+  });
+}
+
+async function checkingAudioContextRunningState() {
+  let ac = content.ac;
+  await ac.notAllowedToStart;
+  ok(ac.state === "suspended", `AudioContext is not started yet.`);
+}
+
+function resumeWithoutExpectedSuccess() {
+  let ac = content.ac;
+  let promise = ac.resume();
+  ac.resumePromises.push(promise);
+  return new Promise((resolve, reject) => {
+    content.setTimeout(() => {
+      if (ac.state == "suspended") {
+        ok(true, "audio context is still suspended");
+        resolve();
+      } else {
+        reject("audio context should not be allowed to start");
+      }
+    }, 2000);
+  });
+}
+
+function resumeWithExpectedSuccess() {
+  let ac = content.ac;
+  ac.resumePromises.push(ac.resume());
+  return Promise.all(ac.resumePromises).then(() => {
+    ok(ac.state == "running", "audio context starts running");
+  });
+}
+
+async function callGUM(testParameters) {
+  info("- calling gum with " + JSON.stringify(testParameters.constraints));
+  if (testParameters.shouldAllowStartingContext) {
+    // Because of the prefs we've set and passed, this is going to allow the
+    // window to start an AudioContext synchronously.
+    testParameters.constraints.fake = true;
+    await content.navigator.mediaDevices.getUserMedia(
+      testParameters.constraints
+    );
+    return;
+  }
+
+  // Call gUM, without sucess: we've made it so that only fake requests
+  // succeed without permission, and this is requesting non-fake-devices. Return
+  // a resolved promise so that the test continues, but the getUserMedia Promise
+  // will never be resolved.
+  // We do this to check that it's not merely calling gUM that allows starting
+  // an AudioContext, it's having the Promise it return resolved successfuly,
+  // because of saved permissions for an origin or explicit user consent using
+  // the prompt.
+  content.navigator.mediaDevices.getUserMedia(testParameters.constraints);
+}
+
+async function testWebAudioWithGUM(testParameters) {
+  info("- open new tab -");
+  let tab = await BrowserTestUtils.openNewForegroundTab(
+    window.gBrowser,
+    "https://example.com"
+  );
+  info("- create audio context -");
+  await SpecialPowers.spawn(tab.linkedBrowser, [], createAudioContext);
+
+  info("- check whether audio context starts running -");
+  try {
+    await SpecialPowers.spawn(
+      tab.linkedBrowser,
+      [],
+      checkingAudioContextRunningState
+    );
+  } catch (error) {
+    ok(false, error.toString());
+  }
+
+  try {
+    await SpecialPowers.spawn(tab.linkedBrowser, [testParameters], callGUM);
+  } catch (error) {
+    ok(false, error.toString());
+  }
+
+  info("- calling resume() again");
+  try {
+    let resumeFunc = testParameters.shouldAllowStartingContext
+      ? resumeWithExpectedSuccess
+      : resumeWithoutExpectedSuccess;
+    await SpecialPowers.spawn(tab.linkedBrowser, [], resumeFunc);
+  } catch (error) {
+    ok(false, error.toString());
+  }
+
+  info("- remove tab -");
+  await BrowserTestUtils.removeTab(tab);
+}
diff --git a/dom/media/autoplay/test/browser/browser_autoplay_videoDocument.js b/dom/media/autoplay/test/browser/browser_autoplay_videoDocument.js
new file mode 100644
index 0000000000..77ce4ddbc1
--- /dev/null
+++ b/dom/media/autoplay/test/browser/browser_autoplay_videoDocument.js
@@ -0,0 +1,80 @@
+"use strict";
+
+const PAGE = GetTestWebBasedURL("audio.ogg");
+
+function setup_test_preference() {
+  return SpecialPowers.pushPrefEnv({
+    set: [
+      ["media.autoplay.default", SpecialPowers.Ci.nsIAutoplay.BLOCKED],
+      ["media.autoplay.blocking_policy", 0],
+    ],
+  });
+}
+
+async function checkIsVideoDocumentAutoplay(browser) {
+  const played = await SpecialPowers.spawn(browser, [], async () => {
+    const video = content.document.getElementsByTagName("video")[0];
+    const played =
+      video &&
+      (await video.play().then(
+        () => true,
+        () => false
+      ));
+    return played;
+  });
+  ok(played, "Should be able to play in video document.");
+}
+
+async function checkIsIframeVideoDocumentAutoplay(browser) {
+  info("- create iframe video document -");
+  const iframeBC = await SpecialPowers.spawn(browser, [PAGE], async pageURL => {
+    const iframe = content.document.createElement("iframe");
+    iframe.src = pageURL;
+    content.document.body.appendChild(iframe);
+    const iframeLoaded = new Promise((resolve, reject) => {
+      iframe.addEventListener("load", e => resolve(), { once: true });
+    });
+    await iframeLoaded;
+    return iframe.browsingContext;
+  });
+
+  info("- check whether iframe video document starts playing -");
+  const [paused, playedLength] = await SpecialPowers.spawn(iframeBC, [], () => {
+    const video = content.document.querySelector("video");
+    return [video.paused, video.played.length];
+  });
+  ok(paused, "Subdoc video should not have played");
+  is(playedLength, 0, "Should have empty played ranges");
+}
+
+add_task(async () => {
+  await BrowserTestUtils.withNewTab(
+    {
+      gBrowser,
+      url: PAGE,
+    },
+    async browser => {
+      info("- setup test preference -");
+      await setup_test_preference();
+
+      info(`- check whether video document is autoplay -`);
+      await checkIsVideoDocumentAutoplay(browser);
+    }
+  );
+});
+
+add_task(async () => {
+  await BrowserTestUtils.withNewTab(
+    {
+      gBrowser,
+      url: "about:blank",
+    },
+    async browser => {
+      info("- setup test preference -");
+      await setup_test_preference();
+
+      info(`- check whether video document in iframe is autoplay -`);
+      await checkIsIframeVideoDocumentAutoplay(browser);
+    }
+  );
+});
diff --git a/dom/media/autoplay/test/browser/file_empty.html b/dom/media/autoplay/test/browser/file_empty.html
new file mode 100644
index 0000000000..d2b0361f09
--- /dev/null
+++ b/dom/media/autoplay/test/browser/file_empty.html
@@ -0,0 +1,8 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>Page left intentionally blank...</title>
+  </head>
+  <body>
+  </body>
+</html>
diff --git a/dom/media/autoplay/test/browser/file_mediaplayback_frame.html b/dom/media/autoplay/test/browser/file_mediaplayback_frame.html
new file mode 100644
index 0000000000..b5685c07b3
--- /dev/null
+++ b/dom/media/autoplay/test/browser/file_mediaplayback_frame.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<html>
+<head>
+<title>Non-Autoplay page being used in Iframe</title>
+</head>
+<body>
+<video id="video" src="gizmo.mp4" loop></video>
+<script type="text/javascript">
+
+const video = document.getElementById("video");
+const w = window.opener || window.parent;
+
+window.onmessage = async event => {
+  if (event.data == "play") {
+    let rv = await video.play().then(() => true, () => false);
+    w.postMessage(rv ? "played" : "blocked", "*");
+  }
+}
+</script>
+</body>
+</html>
diff --git a/dom/media/autoplay/test/browser/file_nonAutoplayAudio.html b/dom/media/autoplay/test/browser/file_nonAutoplayAudio.html
new file mode 100644
index 0000000000..4d2641021a
--- /dev/null
+++ b/dom/media/autoplay/test/browser/file_nonAutoplayAudio.html
@@ -0,0 +1,7 @@
+<!DOCTYPE html>
+<head>
+  <meta content="text/html;charset=utf-8" http-equiv="Content-Type">
+  <meta content="utf-8" http-equiv="encoding">
+</head>
+<body>
+<audio id="testAudio" src="audio.ogg" loop></audio>
diff --git a/dom/media/autoplay/test/browser/file_video.html b/dom/media/autoplay/test/browser/file_video.html
new file mode 100644
index 0000000000..3c70268fbb
--- /dev/null
+++ b/dom/media/autoplay/test/browser/file_video.html
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<html>
+<head>
+<title>video</title>
+</head>
+<body>
+<video id="v" src="gizmo.mp4" controls loop></video>
+</body>
+</html>
diff --git a/dom/media/autoplay/test/browser/head.js b/dom/media/autoplay/test/browser/head.js
new file mode 100644
index 0000000000..c84850900a
--- /dev/null
+++ b/dom/media/autoplay/test/browser/head.js
@@ -0,0 +1,149 @@
+/**
+ * Return a web-based URL for a given file based on the testing directory.
+ * @param {String} fileName
+ *        file that caller wants its web-based url
+ * @param {Boolean} crossOrigin [optional]
+ *        if set, then return a url with different origin. The default value is
+ *        false.
+ */
+function GetTestWebBasedURL(fileName, { crossOrigin = false } = {}) {
+  const origin = crossOrigin ? "http://example.org" : "http://example.com";
+  return (
+    getRootDirectory(gTestPath).replace("chrome://mochitests/content", origin) +
+    fileName
+  );
+}
+
+/**
+ * Runs a content script that creates an autoplay video.
+ * @param {browserElement} browser
+ *        the browser to run the script in
+ * @param {object} args
+ *        test case definition, required members
+ *        {
+ *          mode: String, "autoplay attribute" or "call play".
+ *        }
+ */
+function loadAutoplayVideo(browser, args) {
+  return SpecialPowers.spawn(browser, [args], async args => {
+    info("- create a new autoplay video -");
+    let video = content.document.createElement("video");
+    video.id = "v1";
+    video.didPlayPromise = new Promise((resolve, reject) => {
+      video.addEventListener(
+        "playing",
+        e => {
+          video.didPlay = true;
+          resolve();
+        },
+        { once: true }
+      );
+      video.addEventListener(
+        "blocked",
+        e => {
+          video.didPlay = false;
+          resolve();
+        },
+        { once: true }
+      );
+    });
+    if (args.mode == "autoplay attribute") {
+      info("autoplay attribute set to true");
+      video.autoplay = true;
+    } else if (args.mode == "call play") {
+      info("will call play() when reached loadedmetadata");
+      video.addEventListener(
+        "loadedmetadata",
+        e => {
+          video.play().then(
+            () => {
+              info("video play() resolved");
+            },
+            () => {
+              info("video play() rejected");
+            }
+          );
+        },
+        { once: true }
+      );
+    } else {
+      ok(false, "Invalid 'mode' arg");
+    }
+    video.src = "gizmo.mp4";
+    content.document.body.appendChild(video);
+  });
+}
+
+/**
+ * Runs a content script that checks whether the video created by
+ * loadAutoplayVideo() started playing.
+ * @param {browserElement} browser
+ *        the browser to run the script in
+ * @param {object} args
+ *        test case definition, required members
+ *        {
+ *          name: String, description of test.
+ *          mode: String, "autoplay attribute" or "call play".
+ *          shouldPlay: boolean, whether video should play.
+ *        }
+ */
+function checkVideoDidPlay(browser, args) {
+  return SpecialPowers.spawn(browser, [args], async args => {
+    let video = content.document.getElementById("v1");
+    await video.didPlayPromise;
+    is(
+      video.didPlay,
+      args.shouldPlay,
+      args.name +
+        " should " +
+        (!args.shouldPlay ? "not " : "") +
+        "be able to autoplay"
+    );
+    video.src = "";
+    content.document.body.remove(video);
+  });
+}
+
+/**
+ * Create a tab that will load the given url, and define an autoplay policy
+ * check function inside the content window in that tab. This function should
+ * only be used when `dom.media.autoplay-policy-detection.enabled` is true.
+ * @param {url} url
+ *        the url which the created tab should load
+ */
+async function createTabAndSetupPolicyAssertFunc(url) {
+  let tab = await BrowserTestUtils.openNewForegroundTab(window.gBrowser, url);
+  await SpecialPowers.spawn(tab.linkedBrowser, [], _ => {
+    content.video = content.document.createElement("video");
+    content.ac = new content.AudioContext();
+    content.assertAutoplayPolicy = ({
+      resultForElementType,
+      resultForElement,
+      resultForContextType,
+      resultForContext,
+    }) => {
+      is(
+        content.navigator.getAutoplayPolicy("mediaelement"),
+        resultForElementType,
+        "getAutoplayPolicy('mediaelement') returns correct value"
+      );
+      is(
+        content.navigator.getAutoplayPolicy(content.video),
+        resultForElement,
+        "getAutoplayPolicy(content.video) returns correct value"
+      );
+      // note, per spec "allowed-muted" won't be used for audio context.
+      is(
+        content.navigator.getAutoplayPolicy("audiocontext"),
+        resultForContextType,
+        "getAutoplayPolicy('audiocontext') returns correct value"
+      );
+      is(
+        content.navigator.getAutoplayPolicy(content.ac),
+        resultForContext,
+        "getAutoplayPolicy(content.ac) returns correct value"
+      );
+    };
+  });
+  return tab;
+}
diff --git a/dom/media/autoplay/test/mochitest/AutoplayTestUtils.js b/dom/media/autoplay/test/mochitest/AutoplayTestUtils.js
new file mode 100644
index 0000000000..aa8990c9d9
--- /dev/null
+++ b/dom/media/autoplay/test/mochitest/AutoplayTestUtils.js
@@ -0,0 +1,46 @@
+/* import-globals-from ../../../test/manifest.js */
+
+function playAndPostResult(muted, parent_window) {
+  let element = document.createElement("video");
+  element.preload = "auto";
+  element.muted = muted;
+  element.src = "short.mp4";
+  element.id = "video";
+  document.body.appendChild(element);
+  element.play().then(
+    () => {
+      parent_window.postMessage(
+        { played: true, allowedToPlay: element.allowedToPlay },
+        "*"
+      );
+    },
+    () => {
+      parent_window.postMessage(
+        { played: false, allowedToPlay: element.allowedToPlay },
+        "*"
+      );
+    }
+  );
+}
+
+function nextWindowMessage() {
+  return nextEvent(window, "message");
+}
+
+function log(msg) {
+  var log_pane = document.body;
+  log_pane.appendChild(document.createTextNode(msg));
+  log_pane.appendChild(document.createElement("br"));
+}
+
+const autoplayPermission = "autoplay-media";
+
+async function pushAutoplayAllowedPermission() {
+  return SpecialPowers.pushPermissions([
+    {
+      type: autoplayPermission,
+      allow: true,
+      context: document,
+    },
+  ]);
+}
diff --git a/dom/media/autoplay/test/mochitest/file_autoplay_gv_play_request_frame.html b/dom/media/autoplay/test/mochitest/file_autoplay_gv_play_request_frame.html
new file mode 100644
index 0000000000..de5ad1989f
--- /dev/null
+++ b/dom/media/autoplay/test/mochitest/file_autoplay_gv_play_request_frame.html
@@ -0,0 +1,24 @@
+<!DOCTYPE HTML>
+<html>
+  <head>
+    <title>GV autoplay play request test</title>
+    <script type="text/javascript" src="manifest.js"></script>
+    <script type="text/javascript" src="AutoplayTestUtils.js"></script>
+    <script src="/tests/SimpleTest/EventUtils.js"></script>
+</head>
+<body>
+<script>
+
+window.addEventListener("message",
+  (event) => {
+    // Here we just want to test if media can start from iframe correctly, and
+    // we don't really care about if it's audible or not.
+    const isMuted = false;
+    playAndPostResult(isMuted, event.source);
+  });
+let w = window.opener || window.parent;
+w.postMessage("ready", "*");
+
+</script>
+</body>
+</html>
diff --git a/dom/media/autoplay/test/mochitest/file_autoplay_gv_play_request_window.html b/dom/media/autoplay/test/mochitest/file_autoplay_gv_play_request_window.html
new file mode 100644
index 0000000000..56e4e1031c
--- /dev/null
+++ b/dom/media/autoplay/test/mochitest/file_autoplay_gv_play_request_window.html
@@ -0,0 +1,65 @@
+<!DOCTYPE HTML>
+<html>
+  <head>
+    <title>GV autoplay play request test</title>
+    <script src="/tests/SimpleTest/SimpleTest.js"></script>
+    <script src="/tests/SimpleTest/EventUtils.js"></script>
+    <script type="text/javascript" src="manifest.js"></script>
+    <script type="text/javascript" src="AutoplayTestUtils.js"></script>
+  </head>
+<body>
+<script>
+/**
+ * The test info sent from the parent window will determine what kinds of media
+ * should start, where it should start, the result of the play request and
+ * whether the document is activated by user gesture.
+ */
+nextWindowMessage().then(
+  async (event) => {
+    let testInfo = event.data;
+    testInfo.parentWindow = event.source;
+    await setupTestEnvironment(testInfo);
+    await startPlaybackAndReturnMessage(testInfo);
+  });
+
+/**
+ * The following are helper functions.
+ */
+async function setupTestEnvironment(testInfo) {
+  if (testInfo.activatedDocument != undefined) {
+    info(`activate document`);
+    SpecialPowers.wrap(document).notifyUserGestureActivation();
+  }
+  if (testInfo.iframe != undefined) {
+    info(`create child frame`);
+    testInfo.childFrame = await createChildFrame(testInfo);
+  }
+}
+
+async function createChildFrame(testInfo) {
+  let frame = document.createElement("iframe");
+  let origin = testInfo.iframe == "same-orgin"
+    ? "http://mochi.test:8888" : "http://example.org";
+  frame.src = origin + "/tests/dom/media/autoplay/test/mochitest/file_autoplay_gv_play_request_frame.html";
+  document.body.appendChild(frame);
+  info(`waiting for iframe loading`);
+  is((await nextWindowMessage()).data, "ready", "iframe has finished loading");
+  return frame;
+}
+
+async function startPlaybackAndReturnMessage({muted, iframe, parentWindow, childFrame}) {
+  if (iframe == undefined) {
+    info(`start playback`);
+    playAndPostResult(muted, parentWindow);
+  } else {
+    info("start autoplay from " +  (iframe == "same-origin" ? "same" : "cross")  + " origin child frame");
+    childFrame.contentWindow.postMessage("play", "*");
+    info(`waiting for media calling play from child frame`);
+    let result = await nextWindowMessage();
+    parentWindow.postMessage(result.data, "*");
+  }
+}
+
+</script>
+</body>
+</html>
diff --git a/dom/media/autoplay/test/mochitest/file_autoplay_policy_activation_frame.html b/dom/media/autoplay/test/mochitest/file_autoplay_policy_activation_frame.html
new file mode 100644
index 0000000000..5dfb3da862
--- /dev/null
+++ b/dom/media/autoplay/test/mochitest/file_autoplay_policy_activation_frame.html
@@ -0,0 +1,32 @@
+<!DOCTYPE HTML>
+<html>
+  <head>
+    <title>Autoplay policy frame</title>
+    <script type="text/javascript" src="manifest.js"></script>
+    <script type="text/javascript" src="AutoplayTestUtils.js"></script>
+    <script src="/tests/SimpleTest/EventUtils.js"></script>
+    <style>
+      video {
+        width: 50%;
+        height: 50%;
+      }
+    </style>
+  </head>
+  <body>
+    <script>
+      window.addEventListener("message",
+        (event) => {
+          if (event.data == "click") {
+            SpecialPowers.wrap(document).notifyUserGestureActivation();
+            event.source.postMessage("activated", "*");
+          } else if (event.data == "play-audible") {
+            playAndPostResult(false, event.source);
+          } else if (event.data == "play-muted") {
+            playAndPostResult(true, event.source);
+          }
+        });
+      let w = window.opener || window.parent;
+      w.postMessage("ready", "*");
+    </script>
+  </body>
+</html>
diff --git a/dom/media/autoplay/test/mochitest/file_autoplay_policy_activation_window.html b/dom/media/autoplay/test/mochitest/file_autoplay_policy_activation_window.html
new file mode 100644
index 0000000000..60c5a0cec1
--- /dev/null
+++ b/dom/media/autoplay/test/mochitest/file_autoplay_policy_activation_window.html
@@ -0,0 +1,80 @@
+<!DOCTYPE HTML>
+<html>
+  <head>
+    <title>Autoplay policy window</title>
+    <style>
+      video {
+        width: 50%;
+        height: 50%;
+      }
+    </style>
+    <script src="/tests/SimpleTest/SimpleTest.js"></script>
+    <script src="/tests/SimpleTest/EventUtils.js"></script>
+    <script type="text/javascript" src="manifest.js"></script>
+    <script type="text/javascript" src="AutoplayTestUtils.js"></script>
+  </head>
+  <body>
+    <pre id="test">
+      <script>
+
+        async function createChildFrame(testInfo) {
+          let frame = document.createElement("iframe");
+          let origin = testInfo.same_origin_child
+            ? "http://mochi.test:8888" : "http://example.org";
+          frame.src = origin + "/tests/dom/media/autoplay/test/mochitest/file_autoplay_policy_activation_frame.html";
+          // Wait for it to load...
+          document.body.appendChild(frame);
+          is((await nextWindowMessage()).data, "ready", "Expected a 'ready' message");
+          return frame;
+        }
+
+        async function activateDocument(testInfo) {
+          // Click the window to activate if appropriate.
+          if (testInfo.activated_from == "parent") {
+            info(`activate parent's document`);
+            SpecialPowers.wrap(document).notifyUserGestureActivation();
+          } else if (testInfo.activated_from == "child") {
+            info(`activate child's document`);
+            testInfo.childFrame.contentWindow.postMessage("click", "*");
+            is((await nextWindowMessage()).data, "activated", "has activated child frame.");
+          }
+        }
+
+        function testAutoplayInWindow(testInfo) {
+          info(`start autoplay from parent frame`);
+          playAndPostResult(testInfo.muted, testInfo.parentWindow);
+        }
+
+        async function testAutoplayInChildFrame(testInfo) {
+          info("start autoplay from " +  (testInfo.same_origin_child ? "same" : "cross")  + " origin child frame");
+          // Ask the child iframe to try to play video.
+          let play_message = testInfo.muted ? "play-muted" : "play-audible";
+          testInfo.childFrame.contentWindow.postMessage(play_message, "*");
+          // Wait for the iframe to tell us whether it could play video.
+          let result = await nextWindowMessage();
+          // Report whether the iframe could play to the parent.
+          testInfo.parentWindow.postMessage(result.data, "*");
+        }
+
+        nextWindowMessage().then(
+          async (event) => {
+            let testInfo = event.data;
+            testInfo.parentWindow = event.source;
+            testInfo.childFrame = await createChildFrame(testInfo);
+
+            await activateDocument(testInfo);
+            switch (testInfo.play_from) {
+              case "parent":
+                testAutoplayInWindow(testInfo);
+                break;
+              case "child":
+                testAutoplayInChildFrame(testInfo);
+                break;
+              default:
+                ok(false, "Incorrect 'play_from' value!")
+            }
+          });
+      </script>
+    </pre>
+  </body>
+</html>
diff --git a/dom/media/autoplay/test/mochitest/file_autoplay_policy_eventdown_activation.html b/dom/media/autoplay/test/mochitest/file_autoplay_policy_eventdown_activation.html
new file mode 100644
index 0000000000..e25b6401d1
--- /dev/null
+++ b/dom/media/autoplay/test/mochitest/file_autoplay_policy_eventdown_activation.html
@@ -0,0 +1,85 @@
+<!DOCTYPE HTML>
+<html>
+
+<head>
+  <title>Autoplay policy window</title>
+  <style>
+    video {
+      width: 50%;
+      height: 50%;
+    }
+  </style>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script src="/tests/SimpleTest/EventUtils.js"></script>
+  <script type="text/javascript" src="manifest.js"></script>
+  <script type="text/javascript" src="AutoplayTestUtils.js"></script>
+</head>
+
+<body>
+  <pre id="test">
+      <script>
+
+        window.ok = window.opener.ok;
+        window.is = window.opener.is;
+        window.info = window.opener.info;
+
+        async function testEventDownActivates(eventNames, activator) {
+          let element = document.createElement("video");
+          element.preload = "auto";
+          element.src = "short.mp4";
+          document.body.appendChild(element);
+
+          await once(element, "loadedmetadata");
+
+          let played = await element.play().then(() => true, () => false);
+          ok(!played, "Document should start out not activated, with playback blocked.");
+
+          let x = eventNames.map(
+            (eventName) => {
+              return new Promise(function (resolve, reject) {
+                window.addEventListener(eventName, async function (event) {
+                  let p = await element.play().then(() => true, () => false);
+                  ok(p, "Expect to be activated already in " + eventName);
+                  resolve();
+                });
+              });
+            });
+
+          activator();
+
+          await Promise.all(x);
+
+          removeNodeAndSource(element);
+        }
+
+        nextWindowMessage().then(
+          async (event) => {
+            try {
+              if (event.data == "run keydown test") {
+                await testEventDownActivates(["keydown", "keypress", "keyup"], () => {
+                  document.body.focus();
+                  synthesizeKey(" ");
+                });
+              } else if (event.data == "run mousedown test") {
+                let events = ["mousedown", "mouseup", "click"];
+                if (getAndroidVersion() < 0) {
+                  // Non-Android, also listen on pointer events.
+                  events.push("pointerdown", "pointerup");
+                }
+                await testEventDownActivates(events, () => {
+                  synthesizeMouseAtCenter(document.body, {});
+                });
+              } else {
+                ok(false, "unexpected message");
+              }
+            } catch (e) {
+              ok(false, "Caught exception " + e + " " + e.message + " " + e.stackTrace);
+            }
+            event.source.postMessage("done", "*");
+          });
+
+      </script>
+    </pre>
+</body>
+
+</html>
diff --git a/dom/media/autoplay/test/mochitest/file_autoplay_policy_key_blacklist.html b/dom/media/autoplay/test/mochitest/file_autoplay_policy_key_blacklist.html
new file mode 100644
index 0000000000..c9982f932a
--- /dev/null
+++ b/dom/media/autoplay/test/mochitest/file_autoplay_policy_key_blacklist.html
@@ -0,0 +1,148 @@
+<!DOCTYPE HTML>
+<html>
+
+<head>
+  <title>Autoplay policy window</title>
+  <style>
+    video {
+      width: 50%;
+      height: 50%;
+    }
+    :focus {
+      background-color: blue;
+    }
+  </style>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script src="/tests/SimpleTest/EventUtils.js"></script>
+  <script type="text/javascript" src="manifest.js"></script>
+  <script type="text/javascript" src="AutoplayTestUtils.js"></script>
+</head>
+
+<body>
+  <div id="x">This is a div with id=x.</div>
+  <pre id="test">
+      <input type="text" id="text-input"/>
+      <script>
+
+        window.ok = window.opener.ok;
+        window.is = window.opener.is;
+        window.info = window.opener.info;
+
+        // Keys that are expected to be not considered interaction with the page, and
+        // so not gesture activate the document.
+        let blacklistKeyPresses = [
+          "Tab",
+          "CapsLock",
+          "NumLock",
+          "ScrollLock",
+          "FnLock",
+          "Meta",
+          "OS",
+          "Hyper",
+          "Super",
+          "ContextMenu",
+          "ArrowUp",
+          "ArrowDown",
+          "ArrowLeft",
+          "ArrowRight",
+          "PageUp",
+          "PageDown",
+          "Home",
+          "End",
+          "Backspace",
+          "Fn",
+          "Alt",
+          "AltGraph",
+          "Control",
+          "Shift",
+          "Escape",
+        ];
+
+        let modifiedKeys = [
+          { key: "V", modifiers: { altKey: true, shiftKey: true } },
+          { key: "a", modifiers: { altKey: true } },
+          { key: "a", modifiers: { ctrlKey: true } },
+          { key: "KEY_ArrowRight", modifiers: { metaKey: true } },
+          { key: "KEY_ArrowRight", modifiers: { altKey: true } },
+        ];
+
+        async function sendInput(element, name, input) {
+          synthesizeMouseAtCenter(input, {});
+          let played = await element.play().then(() => true, () => false);
+          ok(!played, "Clicking " + name + " should not activate document and should not unblock play");
+
+          synthesizeCompositionChange({
+            composition: {
+              string: "\u30E9\u30FC\u30E1\u30F3",
+              clauses: [
+                { length: 4, attr: COMPOSITION_ATTR_RAW_CLAUSE }
+              ]
+            },
+            caret: { start: 4, length: 0 }
+          });
+          synthesizeComposition({ type: "compositioncommitasis" });
+          played = await element.play().then(() => true, () => false);
+          ok(!played, "Entering text to " + name + " via IME should not activate document and should not unblock play");
+
+          input.focus();
+          sendString("ascii text");
+          played = await element.play().then(() => true, () => false);
+          ok(!played, "Entering ASCII text into " + name + " should not activate document and should not unblock play");
+
+          input.blur();
+        }
+
+        async function testAutoplayKeyBlacklist(testCase, parent_window) {
+          let element = document.createElement("video");
+          element.preload = "auto";
+          element.src = "short.mp4";
+          document.body.appendChild(element);
+
+          await once(element, "loadedmetadata");
+
+          let played = await element.play().then(() => true, () => false);
+          is(played, false, "Document should start out not activated, with playback blocked.");
+
+          // Try pressing all the keys in the blacklist, then playing.
+          // Document should not be activated, so play should fail.
+
+          for (let key of blacklistKeyPresses) {
+            document.body.focus();
+            synthesizeKey("KEY_" + key);
+            played = await element.play().then(() => true, () => false);
+            is(played, false, "Key " + key + " should not activate document and should not unblock play");
+          }
+
+          // Try pressing some keys with modifiers.
+          let keyNames = (m) => Object.keys(m).join("+");
+          for (let x of modifiedKeys) {
+            document.body.focus();
+            synthesizeKey(x.key, x.modifiers);
+            played = await element.play().then(() => true, () => false);
+            is(played, false, "Key (" + x.key + "+" + keyNames(x.modifiers) + ") should not activate document and should not unblock play");
+          }
+
+          // Try pressing a key not in the blacklist, then playing.
+          // Document should be activated, and media should play.
+          synthesizeKey(" ");
+          played = await element.play().then(() => true, () => false);
+          is(played, true, "Space key should activate document and should unblock play");
+
+          removeNodeAndSource(element);
+        }
+
+        nextWindowMessage().then(
+          async (event) => {
+            try {
+              await testAutoplayKeyBlacklist(event.data, event.source);
+            } catch (e) {
+              ok(false, "Caught exception " + e + " " + e.message + " " + e.stackTrace);
+            }
+            event.source.postMessage("done", "*");
+          });
+
+      </script>
+    </pre>
+</body>
+
+</html>
diff --git a/dom/media/autoplay/test/mochitest/file_autoplay_policy_play_before_loadedmetadata.html b/dom/media/autoplay/test/mochitest/file_autoplay_policy_play_before_loadedmetadata.html
new file mode 100644
index 0000000000..3594d0f236
--- /dev/null
+++ b/dom/media/autoplay/test/mochitest/file_autoplay_policy_play_before_loadedmetadata.html
@@ -0,0 +1,63 @@
+<!DOCTYPE HTML>
+<html>
+
+<head>
+  <title>Autoplay policy window</title>
+  <style>
+    video {
+      width: 50%;
+      height: 50%;
+    }
+  </style>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script src="/tests/SimpleTest/EventUtils.js"></script>
+  <script type="text/javascript" src="manifest.js"></script>
+  <script type="text/javascript" src="AutoplayTestUtils.js"></script>
+</head>
+
+<body>
+  <pre id="test">
+      <script>
+
+        window.is = window.opener.is;
+        window.info = window.opener.info;
+
+        async function testPlayBeforeLoadedMetata(testCase, parent_window) {
+          info("testPlayBeforeLoadedMetata: " + testCase.resource);
+
+          let element = document.createElement("video");
+          element.preload = "auto";
+          element.muted = testCase.muted;
+          element.src = testCase.resource;
+          document.body.appendChild(element);
+
+          is(element.paused, true, testCase.resource + " - should start out paused.");
+
+          let playEventFired = false;
+          once(element, "play").then(() => { playEventFired = true; });
+          let playingEventFired = false;
+          once(element, "playing").then(() => { playingEventFired = true;});
+          let pauseEventFired = false;
+          once(element, "pause").then(() => { pauseEventFired = true; });
+
+          let played = await element.play().then(() => true, () => false);
+
+          let playMsg = testCase.resource + " should " + (!testCase.shouldPlay ? "not " : "") + "play";
+          is(played, testCase.shouldPlay, playMsg);
+          is(playEventFired, testCase.shouldPlay, testCase.resource + " - should get play event if we played");
+          is(playingEventFired, testCase.shouldPlay, testCase.resource + "- should get playing event if we played");
+          is(pauseEventFired, false, testCase.resource + " - should not get pause event if we played");
+          removeNodeAndSource(element);
+        }
+
+        nextWindowMessage().then(
+          async (event) => {
+            await testPlayBeforeLoadedMetata(event.data, event.source);
+            event.source.postMessage("done", "*");
+          });
+
+      </script>
+    </pre>
+</body>
+
+</html>
diff --git a/dom/media/autoplay/test/mochitest/file_autoplay_policy_unmute_pauses.html b/dom/media/autoplay/test/mochitest/file_autoplay_policy_unmute_pauses.html
new file mode 100644
index 0000000000..125ee156b6
--- /dev/null
+++ b/dom/media/autoplay/test/mochitest/file_autoplay_policy_unmute_pauses.html
@@ -0,0 +1,65 @@
+<!DOCTYPE HTML>
+<html>
+
+<head>
+  <title>Autoplay policy window</title>
+  <style>
+    video {
+      width: 50%;
+      height: 50%;
+    }
+  </style>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script src="/tests/SimpleTest/EventUtils.js"></script>
+  <script type="text/javascript" src="manifest.js"></script>
+  <script type="text/javascript" src="AutoplayTestUtils.js"></script>
+</head>
+
+<body>
+  <pre id="test">
+      <script>
+
+        window.is = window.opener.is;
+        window.info = window.opener.info;
+
+        function testAutoplayUnmutePauses(testCase, parent_window) {
+          return new Promise(function (resolve, reject) {
+
+            info("testAutoplayUnmutePauses: " + testCase.property);
+
+            let element = document.createElement("video");
+            element.preload = "auto";
+
+            // Make inaudible.
+            element[testCase.property] = testCase.inaudible;
+
+            // Once we've loaded, play, then make audible.
+            // Assert that the media is paused when we make it audible.
+            element.addEventListener("loadeddata", () => {
+              info("loadeddata");
+              element.play();
+              is(element.paused, false, testCase.property + "=" + testCase.inaudible + " - should be playing");
+              element[testCase.property] = testCase.audible;
+              is(element.paused, true, testCase.property + "=" + testCase.audible + " - should be paused.");
+              resolve();
+            });
+
+            element.src = "short.mp4";
+            element.id = "video";
+            document.body.appendChild(element);
+          });
+        }
+
+        nextWindowMessage().then(
+          (event) => {
+            testAutoplayUnmutePauses(event.data, event.source)
+              .then(() => {
+                event.source.postMessage("done", "*");
+              });
+          });
+
+      </script>
+    </pre>
+</body>
+
+</html>
diff --git a/dom/media/autoplay/test/mochitest/mochitest.ini b/dom/media/autoplay/test/mochitest/mochitest.ini
new file mode 100644
index 0000000000..f25b12e953
--- /dev/null
+++ b/dom/media/autoplay/test/mochitest/mochitest.ini
@@ -0,0 +1,54 @@
+[DEFAULT]

+subsuite = media

+tags = autoplay

+support-files =

+  ../../../test/manifest.js

+  ../../../test/320x240.ogv

+  ../../../test/bogus.duh

+  ../../../test/detodos-short.opus

+  ../../../test/flac-s24.flac

+  ../../../test/gizmo.mp4

+  ../../../test/gizmo.webm

+  ../../../test/gizmo-noaudio.mp4

+  ../../../test/gizmo-noaudio.webm

+  ../../../test/gizmo-short.mp4

+  ../../../test/r11025_s16_c1-short.wav

+  ../../../test/sample.3g2

+  ../../../test/sample.3gp

+  ../../../test/short.mp4

+  ../../../test/seek-short.webm

+  ../../../test/small-shot.flac

+  ../../../test/small-shot.m4a

+  ../../../test/small-shot.mp3

+  ../../../test/small-shot-mp3.mp4

+  ../../../test/small-shot.ogg

+  ../../../test/vp9-short.webm

+  AutoplayTestUtils.js

+  file_autoplay_gv_play_request_frame.html

+  file_autoplay_gv_play_request_window.html

+  file_autoplay_policy_activation_frame.html

+  file_autoplay_policy_activation_window.html

+  file_autoplay_policy_eventdown_activation.html

+  file_autoplay_policy_play_before_loadedmetadata.html

+  file_autoplay_policy_unmute_pauses.html

+  file_autoplay_policy_key_blacklist.html

+

+[test_autoplay.html]

+[test_autoplay_contentEditable.html]

+[test_autoplay_gv_play_request.html]

+skip-if = toolkit != 'android'

+[test_autoplay_policy.html]

+[test_autoplay_policy_activation.html]

+[test_autoplay_policy_play_before_loadedmetadata.html]

+skip-if = toolkit == 'android' # bug 1591121

+[test_autoplay_policy_eventdown_activation.html]

+[test_autoplay_policy_permission.html]

+[test_autoplay_policy_unmute_pauses.html]

+[test_autoplay_policy_key_blacklist.html]

+skip-if = (verify && debug && (os == 'win')) # bug 1424903

+[test_autoplay_policy_web_audio_notResumePageInvokedSuspendedAudioContext.html]

+[test_autoplay_policy_web_audio_mediaElementAudioSourceNode.html]

+[test_autoplay_policy_web_audio_AudioParamStream.html]

+[test_autoplay_policy_web_audio_createMediaStreamSource.html]

+[test_streams_autoplay.html]

+tags=mtg capturestream

diff --git a/dom/media/autoplay/test/mochitest/test_autoplay.html b/dom/media/autoplay/test/mochitest/test_autoplay.html
new file mode 100644
index 0000000000..aa936f976d
--- /dev/null
+++ b/dom/media/autoplay/test/mochitest/test_autoplay.html
@@ -0,0 +1,36 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Media test: autoplay attribute</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+  <script type="text/javascript" src="manifest.js"></script>
+</head>
+<body>
+<video id='v1'"></video><audio id='a1'></audio>
+<video id='v2' autoplay></video><audio id='a2' autoplay></audio>
+<pre id="test">
+<script class="testbody" type="text/javascript">
+/* import-globals-from ../../../test/manifest.js */
+var v1 = document.getElementById('v1');
+var a1 = document.getElementById('a1');
+var v2 = document.getElementById('v2');
+var a2 = document.getElementById('a2');
+ok(!v1.autoplay, "v1.autoplay should be false by default");
+ok(!a1.autoplay, "v1.autoplay should be false by default");
+ok(v2.autoplay, "v2.autoplay should be true");
+ok(a2.autoplay, "v2.autoplay should be true");
+
+v1.autoplay = true;
+a1.autoplay = true;
+ok(v1.autoplay, "video.autoplay not true");
+ok(a1.autoplay, "audio.autoplay not true");
+is(v1.getAttribute("autoplay"), "", "video autoplay attribute not set");
+is(a1.getAttribute("autoplay"), "", "video autoplay attribute not set");
+
+mediaTestCleanup();
+
+</script>
+</pre>
+</body>
+</html>
diff --git a/dom/media/autoplay/test/mochitest/test_autoplay_contentEditable.html b/dom/media/autoplay/test/mochitest/test_autoplay_contentEditable.html
new file mode 100644
index 0000000000..0c0ec31797
--- /dev/null
+++ b/dom/media/autoplay/test/mochitest/test_autoplay_contentEditable.html
@@ -0,0 +1,67 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Media test: play() method</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+  <script type="text/javascript" src="manifest.js"></script>
+</head>
+<body contenteditable="true">
+<pre id="test">
+
+<script>
+/* import-globals-from ../../../test/manifest.js */
+var manager = new MediaTestManager;
+
+var tokens = {
+  0:                ["canplay"],
+  "canplay":        ["canplay", "canplaythrough"],
+  "canplaythrough": ["canplay", "canplaythrough"]
+};
+
+var eventList = ["play", "canplay", "playing", "canplaythrough", "ended"];
+
+function gotPlayEvent(event) {
+  var v = event.target;
+  ok(tokens[v._state].includes(event.type),
+     "Check expected event got " + event.type +
+     " at " + v._state + " for " + v._name);
+  v._state = event.type;
+  if (event.type == 'canplaythrough') {
+    // Remove all event listeners to avoid running tests after finishing test case.
+    eventList.forEach(function (e) {
+      v.removeEventListener(e, gotPlayEvent);
+    });
+    v.pause();
+    goToNext(v);
+  }
+}
+
+function goToNext(v) {
+  v.remove();
+  manager.finished(v.token);
+}
+
+function initTest(test, token) {
+  var v = document.createElement('video');
+  v.preload = "metadata";
+  v.token = token;
+  manager.started(token);
+  v._state = 0;
+
+  eventList.forEach(function (e) {
+    v.addEventListener(e, gotPlayEvent);
+  });
+
+  v.src = test.name;
+  v._name = test.name;
+  v.autoplay = true;
+  document.body.appendChild(v); // Causes load.
+}
+
+manager.runTests(gSmallTests, initTest);
+
+</script>
+</pre>
+</body>
+</html>
diff --git a/dom/media/autoplay/test/mochitest/test_autoplay_gv_play_request.html b/dom/media/autoplay/test/mochitest/test_autoplay_gv_play_request.html
new file mode 100644
index 0000000000..760c452592
--- /dev/null
+++ b/dom/media/autoplay/test/mochitest/test_autoplay_gv_play_request.html
@@ -0,0 +1,221 @@
+<!DOCTYPE HTML>
+<html>
+  <head>
+    <title>GV Autoplay policy test</title>
+    <script src="/tests/SimpleTest/SimpleTest.js"></script>
+    <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+    <script type="text/javascript" src="manifest.js"></script>
+    <script type="text/javascript" src="AutoplayTestUtils.js"></script>
+  </head>
+<body>
+<script>
+
+/**
+ * On GeckoView, we have a different autoplay policy check than the one on other
+ * platforms, which would send a request to the embedding app to ask if the
+ * media can be allowed to play. We use a testing pref to simulate the response
+ * from the request.
+ *
+ * The request has two types, audible and inaudible request. The result of the
+ * audible request would only take effect on audible media, and the result of
+ * inaudible request would only take effect on inaudible media.
+ *
+ * User activation policy still work on GeckoView, so once the page has been
+ * activated, then we won't have to send the request and would allow all media
+ * in that page to play.
+ *
+ * The following test cases contain the information which would be applied in
+ * test, and the expected result of the test. For example, the following info
+ * indicates that, play an [inaudible] media in the environment with [allowed]
+ * [audible] request, and we expect to see it plays successfully.
+ *  - muted: false,
+ *  - requestType: "audible",
+ *  - requestResult: "allowed",
+ *  - expectedPlayResult: true,
+ */
+const testCases = [
+  // (1) testing audible playback
+  {
+    name: "[audible] playback and [allowed audible request] -> allowed",
+    muted: false,
+    requestType: "audible",
+    requestResult: "allowed",
+    expectedPlayResult: true,
+  },
+  {
+    name: "[audible] playback and [denied audible request] -> blocked",
+    muted: false,
+    requestType: "audible",
+    requestResult: "denied",
+    expectedPlayResult: false,
+  },
+  {
+    name: "[audible] playback and [allowed inaudible request] -> blocked",
+    muted: false,
+    requestType: "inaudible",
+    requestResult: "allowed",
+    expectedPlayResult: false,
+  },
+  {
+    name: "[audible] playback and [denied inaudible request] -> blocked",
+    muted: false,
+    requestType: "inaudible",
+    requestResult: "denied",
+    expectedPlayResult: false,
+  },
+  {
+    name: "[audible] playback with [pending request] in [activated document] -> allowed",
+    muted: false,
+    requestType: "all",
+    requestResult: "pending",
+    activatedDocument: true,
+    expectedPlayResult: true,
+  },
+  {
+    name: "[audible] playback with [denied audible request] in [activated document] -> allowed",
+    muted: false,
+    requestType: "audible",
+    requestResult: "allowed",
+    activatedDocument: true,
+    expectedPlayResult: true,
+  },
+  {
+    name: "[audible] playback with [pending request] in [unactivated document] -> blocked",
+    muted: false,
+    requestType: "all",
+    requestResult: "pending",
+    expectedPlayResult: false,
+  },
+  // (2) testing inaudible playback
+  {
+    name: "[inaudible] playback and [allowed audible request] -> blocked",
+    muted: true,
+    requestType: "audible",
+    requestResult: "allowed",
+    expectedPlayResult: false,
+  },
+  {
+    name: "[inaudible] playback and [denied audible request] -> blocked",
+    muted: true,
+    requestType: "audible",
+    requestResult: "denied",
+    expectedPlayResult: false,
+  },
+  {
+    name: "[inaudible] playback and [allowed inaudible request] -> allowed",
+    muted: true,
+    requestType: "inaudible",
+    requestResult: "allowed",
+    expectedPlayResult: true,
+  },
+  {
+    name: "[inaudible] playback and [denied inaudible request] -> blocked",
+    muted: true,
+    requestType: "inaudible",
+    requestResult: "denied",
+    expectedPlayResult: false,
+  },
+  {
+    name: "[inaudible] playback without [pending request] in [activated document] -> allowed",
+    muted: true,
+    requestType: "all",
+    requestResult: "pending",
+    activatedDocument: true,
+    expectedPlayResult: true,
+  },
+  {
+    name: "[inaudible] playback without [denied inaudible request] in [activated document] -> allowed",
+    muted: true,
+    requestType: "inaudible",
+    requestResult: "denied",
+    activatedDocument: true,
+    expectedPlayResult: true,
+  },
+  {
+    name: "[inaudible] playback without [pending request] in [unactivated document] -> blocked",
+    muted: true,
+    requestType: "all",
+    requestResult: "pending",
+    expectedPlayResult: false,
+  },
+  // (3) testing playback from iframe
+  {
+    name: "playback from [same origin] iframe and [allowed all request]-> allowed",
+    requestType: "all",
+    requestResult: "allowed",
+    iframe: "same-origin",
+    expectedPlayResult: true,
+  },
+  {
+    name: "playback from [same origin] iframe and [denied all request]-> blocked",
+    requestType: "all",
+    requestResult: "denied",
+    iframe: "same-origin",
+    expectedPlayResult: false,
+  },
+  {
+    name: "playback from [cross origin] iframe and [allowed all request]-> allowed",
+    requestType: "all",
+    requestResult: "allowed",
+    iframe: "cross-origin",
+    expectedPlayResult: true,
+  },
+  {
+    name: "playback from [cross origin] iframe and [denied all request]-> blocked",
+    requestType: "all",
+    requestResult: "denied",
+    iframe: "cross-origin",
+    expectedPlayResult: false,
+  },
+];
+
+const pageURL = "file_autoplay_gv_play_request_window.html";
+
+SimpleTest.waitForExplicitFinish();
+
+(async function startTest() {
+  for (const testCase of testCases) {
+    info(`- start running test '${testCase.name}'-`);
+    await setTestingPrefs(testCase);
+
+    // Run each test in a new window to ensure they won't interfere each other
+    const testPage = window.open(pageURL, "", "width=500,height=500");
+    await once(testPage, "load");
+    testPage.postMessage(testCase, window.origin);
+    let result = await nextWindowMessage();
+    is(result.data.allowedToPlay, testCase.expectedPlayResult, `allowed - ${testCase.name}`);
+    is(result.data.played, testCase.expectedPlayResult, `played - ${testCase.name}`);
+    testPage.close();
+  }
+  SimpleTest.finish();
+})();
+
+/**
+ * This function would set which type of request would be explicitly allowed,
+ * and the type of request we don't mention about would be pending forever.
+ * E.g. `setTestingPrefs({"audible", "allow"})` will allow the audible request
+ * and leave the inaudible request pending forever.
+ */
+async function setTestingPrefs({requestType, requestResult}) {
+  let prefVal = 0;
+  if (requestType == "all") {
+    if (requestResult == "pending") {
+      prefVal = 7;
+    } else {
+      prefVal = requestResult == "allowed" ? 1 : 2;
+    }
+  } else if (requestType == "audible") {
+    prefVal = requestResult == "allowed" ? 3 : 4;
+  } else if (requestType == "inaudible") {
+    prefVal = requestResult == "allowed" ? 5 : 6;
+  }
+  info(`set testing pref to ${prefVal}`);
+  await SpecialPowers.pushPrefEnv({
+    set: [["media.geckoview.autoplay.request.testing", prefVal],
+          ["media.geckoview.autoplay.request", true]],
+  });
+}
+
+</script>
+</body>
+</html>
diff --git a/dom/media/autoplay/test/mochitest/test_autoplay_policy.html b/dom/media/autoplay/test/mochitest/test_autoplay_policy.html
new file mode 100644
index 0000000000..dae388b21d
--- /dev/null
+++ b/dom/media/autoplay/test/mochitest/test_autoplay_policy.html
@@ -0,0 +1,174 @@
+
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Autoplay policy test</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+  <script type="text/javascript" src="manifest.js"></script>
+</head>
+<body>
+<pre id="test">
+
+<script>
+/* import-globals-from ../../../test/manifest.js */
+let manager = new MediaTestManager;
+
+gTestPrefs.push(["media.autoplay.default", SpecialPowers.Ci.nsIAutoplay.BLOCKED],
+                ["media.autoplay.blocking_policy", 0]);
+
+window.info = function(msg, token) {
+  SimpleTest.info(msg + ", token=" + token);
+}
+
+window.is = function(valA, valB, msg, token) {
+  SimpleTest.is(valA, valB, msg + ", token=" + token);
+}
+
+window.ok = function(val, msg, token) {
+  SimpleTest.ok(val, msg + ", token=" + token);
+}
+
+/**
+ * test files and paremeters
+ */
+var autoplayTests = [
+  /* video */
+  { name: "gizmo.mp4", type: "video/mp4", hasAudio:true },
+  { name: "gizmo-noaudio.mp4", type: "video/mp4", hasAudio:false },
+  { name: "gizmo.webm", type: "video/webm", hasAudio:true },
+  { name: "gizmo-noaudio.webm", type: "video/webm", hasAudio:false },
+  /* audio */
+  { name: "small-shot.ogg", type: "audio/ogg", hasAudio:true },
+  { name: "small-shot.m4a", type: "audio/mp4", hasAudio:true },
+  { name: "small-shot.mp3", type: "audio/mpeg", hasAudio:true },
+  { name: "small-shot.flac", type: "audio/flac", hasAudio:true },
+];
+
+var autoplayParams = [
+  { volume: 1.0, muted: false, preload: "none" },
+  { volume: 0.0, muted: false, preload: "none" },
+  { volume: 1.0, muted: true, preload: "none" },
+  { volume: 0.0, muted: true, preload: "none" },
+  { volume: 1.0, muted: false, preload: "metadata" },
+  { volume: 0.0, muted: false, preload: "metadata" },
+  { volume: 1.0, muted: true, preload: "metadata" },
+  { volume: 0.0, muted: true, preload: "metadata" },
+];
+
+function createTestArray()
+{
+  var tests = [];
+  for (let test of autoplayTests) {
+    for (let param of autoplayParams) {
+      tests.push({
+        name: test.name,
+        type: test.type,
+        hasAudio: test.hasAudio,
+        volume: param.volume,
+        muted: param.muted,
+        preload: param.preload,
+      });
+    }
+  }
+  return tests;
+}
+
+/**
+ * Main test function for different autoplay cases without user interaction.
+ *
+ * When the pref "media.autoplay.default" is 1 and the pref
+ * "media.autoplay.blocking_policy" is 0, we only allow
+ * audible media to autoplay after the website has been activated by specific
+ * user gestures. However, inaudible media won't be restricted.
+ *
+ * Audible means the volume is not zero, or muted is not true for the video with
+ * audio track. For media without loading metadata, we can't know whether it has
+ * audio track or not, so we would also regard it as audible media.
+ *
+ * Inaudible means the volume is zero, or the muted is true, or the video without
+ * audio track.
+ */
+async function runTest(test, token) {
+  manager.started(token);
+
+  await testPlay(test, token);
+  await testAutoplayKeyword(test, token);
+
+  manager.finished(token);
+}
+
+manager.runTests(createTestArray(), runTest);
+
+/**
+ * Different test scenarios
+ */
+async function testPlay(test, token) {
+  info("### start testPlay", token);
+  info(`volume=${test.volume}, muted=${test.muted}, ` +
+       `preload=${test.preload}, hasAudio=${test.hasAudio}`, token);
+
+  let element = document.createElement(getMajorMimeType(test.type));
+  element.volume = test.volume;
+  element.muted = test.muted;
+  element.src = test.name;
+  document.body.appendChild(element);
+
+  // Only need to test preload when calling play(), because media with 'autoplay'
+  // keyword always starts after loading enough data.
+  const preLoadNone = test.preload == "none";
+  if (!preLoadNone) {
+    info("### wait for loading metadata", token);
+    await once(element, "loadedmetadata");
+  }
+
+  let isAudible = (preLoadNone || test.hasAudio) &&
+                  test.volume != 0.0 &&
+                  !test.muted;
+  let state = isAudible? "audible" : "non-audible";
+  info(`### calling play() for ${state} media`, token);
+  let promise = element.play();
+  if (isAudible) {
+    await promise.catch(function(error) {
+      ok(element.paused, `${state} media fail to start via play()`, token);
+      is(error.name, "NotAllowedError", "rejected play promise", token);
+    });
+  } else {
+    // since we just want to check the value of 'paused', we don't need to wait
+    // resolved play promise. (it's equal to wait for 'playing' event)
+    await once(element, "play");
+    ok(!element.paused, `${state} media start via play()`, token);
+  }
+
+  removeNodeAndSource(element);
+}
+
+async function testAutoplayKeyword(test, token) {
+  info("### start testAutoplayKeyword", token);
+  info(`volume=${test.volume}, muted=${test.muted}, ` +
+       `hasAudio=${test.hasAudio}`, token);
+
+  let element = document.createElement(getMajorMimeType(test.type));
+  element.autoplay = true;
+  element.volume = test.volume;
+  element.muted = test.muted;
+  element.src = test.name;
+  document.body.appendChild(element);
+
+  let isAudible = test.hasAudio &&
+                  test.volume != 0.0 &&
+                  !test.muted;
+  let state = isAudible? "audible" : "non-audible";
+  info(`### wait to autoplay for ${state} media`, token);
+  if (isAudible) {
+    await once(element, "canplay");
+    ok(element.paused, `can not start with 'autoplay' keyword for ${state} media`, token);
+  } else {
+    await once(element, "play");
+    ok(!element.paused, `start with 'autoplay' keyword for ${state} media`, token);
+  }
+
+  removeNodeAndSource(element);
+}
+
+</script>
diff --git a/dom/media/autoplay/test/mochitest/test_autoplay_policy_activation.html b/dom/media/autoplay/test/mochitest/test_autoplay_policy_activation.html
new file mode 100644
index 0000000000..eae266030e
--- /dev/null
+++ b/dom/media/autoplay/test/mochitest/test_autoplay_policy_activation.html
@@ -0,0 +1,180 @@
+<!DOCTYPE HTML>
+<html>
+  <head>
+    <title>Autoplay policy test</title>
+    <script src="/tests/SimpleTest/SimpleTest.js"></script>
+    <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+    <script type="text/javascript" src="manifest.js"></script>
+    <script type="text/javascript" src="AutoplayTestUtils.js"></script>
+  </head>
+  <body>
+    <pre id="test">
+      <script>
+
+        // Tests that videos can only play audibly in windows/frames
+        // which have been activated by same-origin user gesture.
+
+        gTestPrefs.push(["media.autoplay.default", SpecialPowers.Ci.nsIAutoplay.BLOCKED],
+                        ["media.autoplay.blocking_policy", 0]);
+
+        SpecialPowers.pushPrefEnv({'set': gTestPrefs}, () => {
+          runTest();
+        });
+
+        let test_cases = [
+          {
+            name: "inaudible playback in unactivated same-origin iframe in activated parent -> allowed",
+            muted: true,
+            same_origin_child: true,
+            activated_from: "parent",
+            play_from: "child",
+            should_play: true,
+          },
+
+          {
+            name: "inaudible playback in unactivated same-origin iframe in unactivated parent -> allowed",
+            muted: true,
+            same_origin_child: true,
+            activated_from: "none",
+            play_from: "child",
+            should_play: true,
+          },
+
+          {
+            name: "audible playback in unactivated same-origin iframe in activated parent -> allowed",
+            muted: false,
+            same_origin_child: true,
+            activated_from: "parent",
+            play_from: "child",
+            should_play: true,
+          },
+
+          {
+            name: "audible playback in unactivated same-origin iframe in unactivated parent -> blocked",
+            muted: false,
+            same_origin_child: true,
+            activated_from: "none",
+            play_from: "child",
+            should_play: false,
+          },
+
+          {
+            name: "inaudible playback in unactivated cross-origin iframe in activated parent -> allowed",
+            muted: true,
+            same_origin_child: false,
+            activated_from: "parent",
+            play_from: "child",
+            should_play: true,
+          },
+
+          {
+            name: "inaudible playback in unactivated cross-origin iframe in unactivated parent -> allowed",
+            muted: true,
+            same_origin_child: false,
+            activated_from: "none",
+            play_from: "child",
+            should_play: true,
+          },
+
+          {
+            name: "audible playback in unactivated cross-origin iframe in activated parent -> allowed",
+            muted: false,
+            same_origin_child: false,
+            activated_from: "parent",
+            play_from: "child",
+            should_play: true,
+          },
+
+          {
+            name: "audible playback in unactivated cross-origin iframe in unactivated parent -> blocked",
+            muted: false,
+            same_origin_child: false,
+            activated_from: "none",
+            play_from: "child",
+            should_play: false,
+          },
+
+          {
+            name: "audible playback in activated cross-origin iframe -> allowed",
+            muted: false,
+            same_origin_child: false,
+            activated_from: "child",
+            play_from: "child",
+            should_play: true,
+          },
+
+          {
+            name: "audible playback in activated document -> allowed",
+            muted: false,
+            activated_from: "parent",
+            play_from: "parent",
+            should_play: true,
+          },
+
+          {
+            name: "audible playback in unactivated document -> blocked",
+            muted: false,
+            activated_from: "none",
+            play_from: "parent",
+            should_play: false,
+          },
+
+          {
+            name: "audible playback in activated document (via cross-origin child) -> allowed",
+            muted: false,
+            same_origin_child: false,
+            activated_from: "child",
+            play_from: "parent",
+            should_play: true,
+          },
+
+          {
+            name: "audible playback in activated document (via same-origin child) -> allowed",
+            muted: false,
+            same_origin_child: true,
+            activated_from: "child",
+            play_from: "parent",
+            should_play: true,
+          },
+
+          {
+            name: "inaudible playback in activated document -> allowed",
+            muted: true,
+            activated_from: "parent",
+            play_from: "parent",
+            should_play: true,
+          },
+
+          {
+            name: "inaudible playback in unactivated document -> allowed",
+            muted: true,
+            activated_from: "none",
+            play_from: "parent",
+            should_play: true,
+          },
+
+        ];
+
+        let child_url = "file_autoplay_policy_activation_window.html";
+
+        async function runTest() {
+          for (const test_case of test_cases) {
+            // Run each test in a new window, to ensure its user gesture
+            // activation state isn't tainted by preceeding tests.
+            let child = window.open(child_url, "", "width=500,height=500");
+            await once(child, "load");
+            child.postMessage(test_case, window.origin);
+            let result = await nextWindowMessage();
+            SimpleTest.is(result.data.allowedToPlay, test_case.should_play, "allowed - " + test_case.name);
+            SimpleTest.is(result.data.played, test_case.should_play, "played - " + test_case.name);
+            child.close();
+          }
+          SimpleTest.finish();
+        }
+
+        SimpleTest.waitForExplicitFinish();
+
+      </script>
+    </pre>
+  </body>
+</html>
diff --git a/dom/media/autoplay/test/mochitest/test_autoplay_policy_eventdown_activation.html b/dom/media/autoplay/test/mochitest/test_autoplay_policy_eventdown_activation.html
new file mode 100644
index 0000000000..878f996ec5
--- /dev/null
+++ b/dom/media/autoplay/test/mochitest/test_autoplay_policy_eventdown_activation.html
@@ -0,0 +1,55 @@
+<!DOCTYPE HTML>
+<html>
+
+<head>
+  <title>Autoplay policy test</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+  <script type="text/javascript" src="manifest.js"></script>
+  <script type="text/javascript" src="AutoplayTestUtils.js"></script>
+</head>
+
+<body>
+  <pre id="test">
+      <script>
+
+        // Tests that we gesture activate on mousedown and keydown.
+
+        gTestPrefs.push(["media.autoplay.default", SpecialPowers.Ci.nsIAutoplay.BLOCKED],
+          ["media.autoplay.blocking_policy", 0]);
+
+        SpecialPowers.pushPrefEnv({ 'set': gTestPrefs }, () => {
+          runTest();
+        });
+
+        let child_url = "file_autoplay_policy_eventdown_activation.html";
+
+        async function runTest() {
+          // Run test in a new window, to ensure its user gesture
+          // activation state isn't tainted by preceeding tests.
+          {
+            let child = window.open(child_url, "", "width=500,height=500");
+            await once(child, "load");
+            child.postMessage("run keydown test", window.origin);
+            await nextWindowMessage();
+            child.close();
+          }
+
+          {
+            let child = window.open(child_url, "", "width=500,height=500");
+            await once(child, "load");
+            child.postMessage("run mousedown test", window.origin);
+            await nextWindowMessage();
+            child.close();
+          }
+
+          SimpleTest.finish();
+        }
+
+        SimpleTest.waitForExplicitFinish();
+
+      </script>
+    </pre>
+</body>
+
+</html>
diff --git a/dom/media/autoplay/test/mochitest/test_autoplay_policy_key_blacklist.html b/dom/media/autoplay/test/mochitest/test_autoplay_policy_key_blacklist.html
new file mode 100644
index 0000000000..a85c63713a
--- /dev/null
+++ b/dom/media/autoplay/test/mochitest/test_autoplay_policy_key_blacklist.html
@@ -0,0 +1,47 @@
+<!DOCTYPE HTML>
+<html>
+
+<head>
+  <title>Autoplay policy test</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+  <script type="text/javascript" src="manifest.js"></script>
+  <script type="text/javascript" src="AutoplayTestUtils.js"></script>
+</head>
+
+<body>
+  <pre id="test">
+      <script>
+
+        // Tests that keypresses for non-printable characters,
+        // and mouse/keyboard interaction with editable elements,
+        // don't gesture activate documents, and don't unblock
+        // audible autoplay.
+
+        gTestPrefs.push(["media.autoplay.default", SpecialPowers.Ci.nsIAutoplay.BLOCKED],
+          ["media.autoplay.blocking_policy", 0]);
+
+        SpecialPowers.pushPrefEnv({ 'set': gTestPrefs }, () => {
+          runTest();
+        });
+
+        let child_url = "file_autoplay_policy_key_blacklist.html";
+
+        async function runTest() {
+          // Run test in a new window, to ensure its user gesture
+          // activation state isn't tainted by preceeding tests.
+          let child = window.open(child_url, "", "width=500,height=500");
+          await once(child, "load");
+          child.postMessage("run test", window.origin);
+          await nextWindowMessage();
+          child.close();
+          SimpleTest.finish();
+        }
+
+        SimpleTest.waitForExplicitFinish();
+
+      </script>
+    </pre>
+</body>
+
+</html>
diff --git a/dom/media/autoplay/test/mochitest/test_autoplay_policy_permission.html b/dom/media/autoplay/test/mochitest/test_autoplay_policy_permission.html
new file mode 100644
index 0000000000..b91e4d7be8
--- /dev/null
+++ b/dom/media/autoplay/test/mochitest/test_autoplay_policy_permission.html
@@ -0,0 +1,80 @@
+<!DOCTYPE HTML>
+<html>
+
+<head>
+  <title>Autoplay policy test</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+  <script type="text/javascript" src="manifest.js"></script>
+  <script type="text/javascript" src="AutoplayTestUtils.js"></script>
+</head>
+
+<body>
+  <pre id="test">
+      <script>
+
+        // Tests that origins with "autoplay-media" permission can autoplay.
+
+        gTestPrefs.push(["media.autoplay.default", SpecialPowers.Ci.nsIAutoplay.BLOCKED],
+          ["media.autoplay.blocking_policy", 0]);
+
+        SpecialPowers.pushPrefEnv({ 'set': gTestPrefs }, () => {
+          runTest();
+        });
+
+        async function testPlayInOrigin(testCase) {
+          // Run test in a new window, to ensure its user gesture
+          // activation state isn't tainted by preceeding tests.
+          let url = testCase.origin + "/tests/dom/media/autoplay/test/mochitest/file_autoplay_policy_activation_frame.html";
+          let child = window.open(url, "", "width=500,height=500");
+          is((await nextWindowMessage()).data, "ready", "Expected a 'ready' message");
+          child.postMessage("play-audible", testCase.origin);
+          // Wait for the window to tell us whether it could play video.
+          let result = await nextWindowMessage();
+          is(result.data.allowedToPlay, testCase.shouldPlay, "allowedToPlay - " + testCase.message);
+          is(result.data.played, testCase.shouldPlay, "played - " + testCase.message);
+          child.close();
+        }
+
+        async function runTest() {
+          // First verify that we can't play in a document unwhitelisted.
+          is(window.origin, "http://mochi.test:8888", "Origin should be as we assume, otherwise the rest of the test is bogus!");
+
+          await testPlayInOrigin({
+            origin: "http://mochi.test:8888",
+            shouldPlay: false,
+            message: "Should not be able to play unwhitelisted."
+          });
+
+          // Add our origin to the whitelist.
+          await pushAutoplayAllowedPermission();
+
+          // Now we should be able to play...
+          await testPlayInOrigin({
+            origin: "http://mochi.test:8888",
+            shouldPlay: true,
+            message: "Should be able to play since whitelisted."
+          });
+
+          // But sub-origins should not.
+          await testPlayInOrigin({
+            origin: "http://test1.mochi.test:8888",
+            shouldPlay: false,
+            message: "Sub origin should not count as whitelisted."
+          });
+          await testPlayInOrigin({
+            origin: "http://sub1.test1.mochi.test:8888",
+            shouldPlay: false,
+            message: "Sub-sub-origins should not count as whitelisted."
+          });
+
+          SimpleTest.finish();
+        }
+
+        SimpleTest.waitForExplicitFinish();
+
+      </script>
+    </pre>
+</body>
+
+</html>
diff --git a/dom/media/autoplay/test/mochitest/test_autoplay_policy_play_before_loadedmetadata.html b/dom/media/autoplay/test/mochitest/test_autoplay_policy_play_before_loadedmetadata.html
new file mode 100644
index 0000000000..b5f70be227
--- /dev/null
+++ b/dom/media/autoplay/test/mochitest/test_autoplay_policy_play_before_loadedmetadata.html
@@ -0,0 +1,73 @@
+<!DOCTYPE HTML>
+<html>
+
+<head>
+  <title>Autoplay policy test</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+  <script type="text/javascript" src="manifest.js"></script>
+  <script type="text/javascript" src="AutoplayTestUtils.js"></script>
+</head>
+
+<body>
+  <pre id="test">
+      <script>
+
+        window.is = SimpleTest.is;
+        window.info = SimpleTest.info;
+
+        // Tests that videos which have no audio track will play if play()
+        // is called before the video has reached readyState >= HAVE_METADATA.
+
+        gTestPrefs.push(["media.autoplay.default", SpecialPowers.Ci.nsIAutoplay.BLOCKED],
+          ["media.autoplay.blocking_policy", 0]);
+
+        SpecialPowers.pushPrefEnv({ 'set': gTestPrefs }, () => {
+          runTest();
+        });
+
+        let testCases = [
+          {
+            resource: "320x240.ogv", // Only video track.
+            shouldPlay: false,
+            muted: false,
+          },
+          {
+            resource: "320x240.ogv", // Only video track.
+            shouldPlay: true,
+            muted: true,
+          },
+          {
+            resource: "short.mp4", // Audio and video track.
+            shouldPlay: false,
+            muted: false,
+          },
+          {
+            resource: "short.mp4", // Audio and video track.
+            shouldPlay: true,
+            muted: true,
+          },
+        ];
+
+        let child_url = "file_autoplay_policy_play_before_loadedmetadata.html";
+
+        async function runTest() {
+          for (const testCase of testCases) {
+            // Run each test in a new window, to ensure its user gesture
+            // activation state isn't tainted by preceeding tests.
+            let child = window.open(child_url, "", "width=500,height=500");
+            await once(child, "load");
+            child.postMessage(testCase, window.origin);
+            await nextWindowMessage();
+            child.close();
+          }
+          SimpleTest.finish();
+        }
+
+        SimpleTest.waitForExplicitFinish();
+
+      </script>
+    </pre>
+</body>
+
+</html>
diff --git a/dom/media/autoplay/test/mochitest/test_autoplay_policy_unmute_pauses.html b/dom/media/autoplay/test/mochitest/test_autoplay_policy_unmute_pauses.html
new file mode 100644
index 0000000000..29ce4b801f
--- /dev/null
+++ b/dom/media/autoplay/test/mochitest/test_autoplay_policy_unmute_pauses.html
@@ -0,0 +1,64 @@
+<!DOCTYPE HTML>
+<html>
+
+<head>
+  <title>Autoplay policy test</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+  <script type="text/javascript" src="manifest.js"></script>
+  <script type="text/javascript" src="AutoplayTestUtils.js"></script>
+</head>
+
+<body>
+  <pre id="test">
+      <script>
+
+        window.is = SimpleTest.is;
+        window.info = SimpleTest.info;
+
+        // Tests that videos can only play audibly in windows/frames
+        // which have been activated by same-origin user gesture.
+
+        gTestPrefs.push(["media.autoplay.default", SpecialPowers.Ci.nsIAutoplay.BLOCKED],
+          ["media.autoplay.blocking_policy", 0]);
+
+        SpecialPowers.pushPrefEnv({ 'set': gTestPrefs }, () => {
+          runTest();
+        });
+
+        let testCases = [
+          {
+            property: "muted",
+            inaudible: true,
+            audible: false,
+          },
+
+          {
+            property: "volume",
+            inaudible: 0.0,
+            audible: 1.0,
+          },
+        ];
+
+        let child_url = "file_autoplay_policy_unmute_pauses.html";
+
+        async function runTest() {
+          for (const testCase of testCases) {
+            // Run each test in a new window, to ensure its user gesture
+            // activation state isn't tainted by preceeding tests.
+            let child = window.open(child_url, "", "width=500,height=500");
+            await once(child, "load");
+            child.postMessage(testCase, window.origin);
+            await nextWindowMessage();
+            child.close();
+          }
+          SimpleTest.finish();
+        }
+
+        SimpleTest.waitForExplicitFinish();
+
+      </script>
+    </pre>
+</body>
+
+</html>
diff --git a/dom/media/autoplay/test/mochitest/test_autoplay_policy_web_audio_AudioParamStream.html b/dom/media/autoplay/test/mochitest/test_autoplay_policy_web_audio_AudioParamStream.html
new file mode 100644
index 0000000000..27dfa5388f
--- /dev/null
+++ b/dom/media/autoplay/test/mochitest/test_autoplay_policy_web_audio_AudioParamStream.html
@@ -0,0 +1,171 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Autoplay policy test : suspend/resume the AudioParam's stream</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+  <script type="text/javascript" src="manifest.js"></script>
+</head>
+<body>
+<script>
+
+/**
+ * This test is used to ensure the AudioParam's stream can be suspended/resumed
+ * by AudioContext.
+ */
+
+SimpleTest.waitForExplicitFinish();
+
+(async function testSuspendAndResumeAudioParamStreams() {
+  await setupTestPreferences();
+
+  info(`- create the AudioContext -`);
+  createAudioContext();
+
+  info(`- the AudioContext is not allowed to start in beginning -`);
+  await audioContextShouldBeBlocked();
+
+  info(`- connect AudioScheduledSourceNode to the AudioParam and start AudioScheduledSourceNode, the AudioParam's stream should be suspended in the beginning -`)
+  let audioParamsArr = await connectAudioScheduledSourceNodeToAudioParams();
+
+  info(`- the AudioContext and the AudioParam's stream should be resumed -`);
+  await audioContextAndAudioParamStreamsShouldBeResumed(audioParamsArr);
+
+  info(`- suspend the AudioContext which should also suspend the AudioParam's stream -`);
+  await suspendAudioContextAndAudioParamStreams(audioParamsArr);
+
+  endTest();
+})();
+
+/**
+ * Test utility functions
+ */
+
+function setupTestPreferences() {
+  return SpecialPowers.pushPrefEnv({"set": [
+    ["media.autoplay.default", SpecialPowers.Ci.nsIAutoplay.BLOCKED],
+    ["media.autoplay.blocking_policy", 0],
+    ["media.autoplay.block-webaudio", true],
+    ["media.autoplay.block-event.enabled", true],
+  ]});
+}
+
+function createAudioContext() {
+  /* global ac */
+  window.ac = new AudioContext();
+
+  ac.allowedToStart = new Promise(resolve => {
+    ac.addEventListener("statechange", function() {
+      if (ac.state === "running") {
+        resolve();
+      }
+    }, {once: true});
+  });
+
+  ac.notAllowedToStart = new Promise(resolve => {
+    ac.addEventListener("blocked", async function() {
+      resolve();
+    }, {once: true});
+  });
+}
+
+async function audioContextShouldBeBlocked() {
+  await ac.notAllowedToStart;
+  is(ac.state, "suspended", `AudioContext is blocked.`);
+}
+
+function createAudioParams(nodeType) {
+  switch (nodeType) {
+    case "audioBufferSource":
+      let buffer = ac.createBufferSource();
+      return [buffer.playbackRate, buffer.detune];
+    case "biquadFilter":
+      let bf = ac.createBiquadFilter();
+      return [bf.frequency, bf.detune, bf.Q, bf.gain];
+    case "constantSource":
+      return [ac.createConstantSource().offset];
+    case "dynamicsCompressor":
+      let dc = ac.createDynamicsCompressor();
+      return [dc.threshold, dc.knee, dc.ratio, dc.attack, dc.release];
+    case "delay":
+      return [ac.createDelay(5.0).delayTime];
+    case "gain":
+      return [ac.createGain().gain];
+    case "oscillator":
+      let osc = ac.createOscillator();
+      return [osc.frequency, osc.detune];
+    case "panner":
+      let panner = ac.createPanner();
+      return [panner.positionX, panner.positionY, panner.positionZ,
+              panner.orientationX, panner.orientationY, panner.orientationZ];
+    case "stereoPanner":
+      return [ac.createStereoPanner().pan];
+    default:
+      ok(false, `non-defined node type ${nodeType}.`);
+      return [];
+  }
+}
+
+function createAudioParamArrWithName(nodeType) {
+  let audioParamsArr = createAudioParams(nodeType);
+  for (let audioParam of audioParamsArr) {
+    audioParam.name = nodeType;
+  }
+  return audioParamsArr;
+}
+
+function createAllAudioParamsFromDifferentAudioNode() {
+  const NodesWithAudioParam =
+    ["audioBufferSource", "biquadFilter", "constantSource", "delay",
+     "dynamicsCompressor", "gain", "oscillator", "panner", "stereoPanner"];
+  let audioParamsArr = [];
+  for (let nodeType of NodesWithAudioParam) {
+    audioParamsArr = audioParamsArr.concat(createAudioParamArrWithName(nodeType));
+  }
+  ok(audioParamsArr.length >= NodesWithAudioParam.length,
+     `Length of AudioParam array (${audioParamsArr.length}) is longer than the "
+     "length of node type array (${NodesWithAudioParam.length}).`);
+  return audioParamsArr;
+}
+
+function connectAudioScheduledSourceNodeToAudioParams() {
+  let osc = ac.createOscillator();
+  let audioParamsArr = createAllAudioParamsFromDifferentAudioNode();
+  for (let audioParam of audioParamsArr) {
+    osc.connect(audioParam);
+    ok(SpecialPowers.wrap(audioParam).isTrackSuspended,
+      `(${audioParam.name}) audioParam's stream has been suspended.`);
+  }
+
+  // simulate user gesture in order to start video.
+  SpecialPowers.wrap(document).notifyUserGestureActivation();
+  osc.start();
+  return audioParamsArr;
+}
+
+async function audioContextAndAudioParamStreamsShouldBeResumed(audioParamsArr) {
+  await ac.allowedToStart;
+  is(ac.state, "running", `AudioContext is allowed to start.`);
+  for (let audioParam of audioParamsArr) {
+    ok(!SpecialPowers.wrap(audioParam).isTrackSuspended,
+       `(${audioParam.name}) audioParam's stream has been resumed.`);;
+  }
+}
+
+async function suspendAudioContextAndAudioParamStreams(audioParamsArr) {
+  await ac.suspend();
+  is(ac.state, "suspended", `AudioContext is suspended.`);
+  for (let audioParam of audioParamsArr) {
+    ok(SpecialPowers.wrap(audioParam).isTrackSuspended,
+       `(${audioParam.name}) audioParam's stream has been suspended.`);;
+  }
+}
+
+function endTest() {
+  // reset the activation flag in order not to interfere following test in the
+  // verify mode which would run the test using same document couple times.
+  SpecialPowers.wrap(document).clearUserGestureActivation();
+  SimpleTest.finish();
+}
+
+</script>
diff --git a/dom/media/autoplay/test/mochitest/test_autoplay_policy_web_audio_createMediaStreamSource.html b/dom/media/autoplay/test/mochitest/test_autoplay_policy_web_audio_createMediaStreamSource.html
new file mode 100644
index 0000000000..5fe9aa64fc
--- /dev/null
+++ b/dom/media/autoplay/test/mochitest/test_autoplay_policy_web_audio_createMediaStreamSource.html
@@ -0,0 +1,119 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Autoplay policy test : createMediaStreamSource with active stream</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+  <script type="text/javascript" src="manifest.js"></script>
+</head>
+<body>
+<script>
+
+/**
+ * This test is used to ensure that we would try to start the blocked AudioContext
+ * which is blocked by autoplay policy, when it creates a MediaStreamAudioSourceNode
+ * which has a active input stream.
+ */
+
+SimpleTest.waitForExplicitFinish();
+
+(async function testStartAudioContextWhenCreatingMediaStreamAudioSourceWithActiveStream() {
+  await setupTestPreferences();
+
+  info(`- create 2 AudioContext, one is used to generate active stream, another one is used to test whether it would be resumed after starting MediaStreamAudioSource with active stream -`);
+  createAudioContexts();
+
+  info(`- both AudioContext are not allowed to start in beginning -`);
+  await audioContextsShouldBeBlocked();
+
+  info(`- using AudioContext2 to create a MediaStreamAudioSourceNode with active stream, which should resume AudioContext2 -`);
+  await createMediaStreamAudioSourceByAudioContext2();
+
+  endTest();
+})();
+
+/**
+ * Test utility functions
+ */
+
+function setupTestPreferences() {
+  return SpecialPowers.pushPrefEnv({"set": [
+    ["media.autoplay.default", SpecialPowers.Ci.nsIAutoplay.BLOCKED],
+    ["media.autoplay.blocking_policy", 0],
+    ["media.autoplay.block-webaudio", true],
+    ["media.autoplay.block-event.enabled", true],
+  ]});
+}
+
+function createAudioContexts() {
+  /* global ac1, ac2 */
+  window.ac1 = new AudioContext();
+  window.ac2 = new AudioContext();
+
+  ac1.allowedToStart = new Promise(resolve => {
+    ac1.addEventListener("statechange", function() {
+      if (ac1.state === "running") {
+        resolve();
+      }
+    }, {once: true});
+  });
+
+  ac1.notAllowedToStart = new Promise(resolve => {
+    ac1.addEventListener("blocked", async function() {
+      resolve();
+    }, {once: true});
+  });
+
+
+  ac2.allowedToStart = new Promise(resolve => {
+    ac2.addEventListener("statechange", function() {
+      if (ac2.state === "running") {
+        resolve();
+      }
+    }, {once: true});
+  });
+
+  ac2.notAllowedToStart = new Promise(resolve => {
+    ac2.addEventListener("blocked", async function() {
+      resolve();
+    }, {once: true});
+  });
+}
+
+async function audioContextsShouldBeBlocked() {
+  await ac1.notAllowedToStart;
+  await ac2.notAllowedToStart;
+  is(ac1.state, "suspended", `AudioContext1 is blocked.`);
+  is(ac2.state, "suspended", `AudioContext2 is blocked.`);
+}
+
+async function startAudioContext1() {
+  // simulate user gesture in order to start video.
+  SpecialPowers.wrap(document).notifyUserGestureActivation();
+  ok(await ac1.resume().then(() => true, () => false), `resumed AudioContext1.`);
+  await ac1.allowedToStart;
+  is(ac1.state, "running", `AudioContext1 is running.`);
+}
+
+async function getActiveStream() {
+  await startAudioContext1();
+  // As AudioContext1 has been resumed, we can use it to create active stream.
+  return ac1.createMediaStreamDestination().stream;
+}
+
+async function createMediaStreamAudioSourceByAudioContext2() {
+  is(ac2.state, "suspended", `AudioContext2 is suspended.`);
+  let source = ac2.createMediaStreamSource(await getActiveStream());
+  source.connect(ac2.destination);
+  await ac2.allowedToStart;
+  is(ac2.state, "running", `AudioContext2 is running.`);
+}
+
+function endTest() {
+  // reset the activation flag in order not to interfere following test in the
+  // verify mode which would run the test using same document couple times.
+  SpecialPowers.wrap(document).clearUserGestureActivation();
+  SimpleTest.finish();
+}
+
+</script>
diff --git a/dom/media/autoplay/test/mochitest/test_autoplay_policy_web_audio_mediaElementAudioSourceNode.html b/dom/media/autoplay/test/mochitest/test_autoplay_policy_web_audio_mediaElementAudioSourceNode.html
new file mode 100644
index 0000000000..41fab54133
--- /dev/null
+++ b/dom/media/autoplay/test/mochitest/test_autoplay_policy_web_audio_mediaElementAudioSourceNode.html
@@ -0,0 +1,105 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Autoplay policy test : use media element as source for web audio</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+  <script type="text/javascript" src="manifest.js"></script>
+</head>
+<body>
+<script>
+/* import-globals-from ../../../test/manifest.js */
+/**
+ * This test is used to ensure blocked AudioContext would be resumed when the
+ * source media element of MediaElementAudioSouceNode which has been created and
+ * connected to destinationnode starts.
+ */
+
+SimpleTest.waitForExplicitFinish();
+
+(async function testResumeAudioContextWhenMediaElementSourceStarted() {
+  await setupTestPreferences();
+
+  info(`- create audio context -`);
+  createAudioContext();
+
+  info(`- AudioContext is not allowed to start in beginning -`);
+  await audioContextShouldBeBlocked();
+
+  info(`- create a source for web audio and start the source -`);
+  await useMediaElementAsSourceAndPlayMediaElement();
+
+  info(`- AudioContext should be allowed to start after MediaElementAudioSourceNode started -`);
+  await audioContextShouldBeAllowedToStart();
+
+  endTest();
+})();
+
+/**
+ * Test utility functions
+ */
+
+function setupTestPreferences() {
+  return SpecialPowers.pushPrefEnv({"set": [
+    ["media.autoplay.default", SpecialPowers.Ci.nsIAutoplay.BLOCKED],
+    ["media.autoplay.blocking_policy", 0],
+    ["media.autoplay.block-webaudio", true],
+    ["media.autoplay.block-event.enabled", true],
+  ]});
+}
+
+function createAudioContext() {
+  /* global ac */
+  window.ac = new AudioContext();
+
+  ac.allowedToStart = new Promise(resolve => {
+    ac.addEventListener("statechange", function() {
+      if (ac.state === "running") {
+        resolve();
+      }
+    }, {once: true});
+  });
+
+  ac.notAllowedToStart = new Promise(resolve => {
+    ac.addEventListener("blocked", async function() {
+      resolve();
+    }, {once: true});
+  });
+}
+
+async function audioContextShouldBeBlocked() {
+  await ac.notAllowedToStart;
+  is(ac.state, "suspended", `AudioContext is blocked.`);
+}
+
+async function useMediaElementAsSourceAndPlayMediaElement() {
+  let video = document.createElement('video');
+  video.src = "gizmo.mp4";
+
+  let source = ac.createMediaElementSource(video);
+  source.connect(ac.destination);
+  // simulate user gesture in order to start video.
+  SpecialPowers.wrap(document).notifyUserGestureActivation();
+  await playVideo(video);
+}
+
+async function playVideo(video) {
+  video.play();
+  await once(video, "play");
+  ok(true, `video started.`);
+  removeNodeAndSource(video);
+}
+
+async function audioContextShouldBeAllowedToStart() {
+  await ac.allowedToStart;
+  is(ac.state, "running", `AudioContext is allowed to start.`);
+}
+
+function endTest() {
+  // reset the activation flag in order not to interfere following test in the
+  // verify mode which would run the test using same document couple times.
+  SpecialPowers.wrap(document).clearUserGestureActivation();
+  SimpleTest.finish();
+}
+
+</script>
diff --git a/dom/media/autoplay/test/mochitest/test_autoplay_policy_web_audio_notResumePageInvokedSuspendedAudioContext.html b/dom/media/autoplay/test/mochitest/test_autoplay_policy_web_audio_notResumePageInvokedSuspendedAudioContext.html
new file mode 100644
index 0000000000..46df256391
--- /dev/null
+++ b/dom/media/autoplay/test/mochitest/test_autoplay_policy_web_audio_notResumePageInvokedSuspendedAudioContext.html
@@ -0,0 +1,96 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Autoplay policy test : do not resume AudioContext which is suspended by page</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+  <script type="text/javascript" src="manifest.js"></script>
+</head>
+<body>
+<script>
+/* import-globals-from ../../../test/manifest.js */
+/**
+ * This test is used to ensure we won't resume AudioContext which is suspended
+ * by page (it means calling suspend() explicitly) when calling
+ * `AudioScheduledSourceNode.start()`.
+ */
+
+SimpleTest.waitForExplicitFinish();
+
+(async function testNotResumeUserInvokedSuspendedAudioContext() {
+  await setupTestPreferences();
+
+  const nodeTypes = ["AudioBufferSourceNode", "ConstantSourceNode", "OscillatorNode"];
+  for (let nodeType of nodeTypes) {
+    info(`- create an audio context which should not be allowed to start, it's allowed to be created, but it's forbidden to start -`);
+    await createAudioContext();
+
+    info(`- explicitly suspend the AudioContext in the page -`);
+    suspendAudioContext();
+
+    info(`- start an 'AudioScheduledSourceNode', and check that the AudioContext does not start, because it has been explicitly suspended -`);
+    await createAndStartAudioScheduledSourceNode(nodeType);
+  }
+
+  SimpleTest.finish();
+})();
+
+/**
+ * Test utility functions
+ */
+
+function setupTestPreferences() {
+  return SpecialPowers.pushPrefEnv({"set": [
+    ["media.autoplay.default", SpecialPowers.Ci.nsIAutoplay.BLOCKED],
+    ["media.autoplay.blocking_policy", 0],
+    ["media.autoplay.block-webaudio", true],
+    ["media.autoplay.block-event.enabled", true],
+  ]});
+}
+
+async function createAudioContext() {
+  /* global ac */
+  window.ac = new AudioContext();
+  await once(ac, "blocked");
+  is(ac.state, "suspended", `AudioContext is blocked.`);
+}
+
+function suspendAudioContext() {
+  try {
+    ac.suspend();
+  } catch(e) {
+    ok(false, `AudioContext suspend failed!`);
+  }
+}
+
+async function createAndStartAudioScheduledSourceNode(nodeType) {
+  let node;
+  info(`- create ${nodeType} -`);
+  switch (nodeType) {
+    case "AudioBufferSourceNode":
+      node = ac.createBufferSource();
+      break;
+    case "ConstantSourceNode":
+      node = ac.createConstantSource();
+      break;
+    case "OscillatorNode":
+      node = ac.createOscillator();
+      break;
+    default:
+      ok(false, "undefined AudioScheduledSourceNode type");
+      return;
+  }
+  node.connect(ac.destination);
+
+  // activate the document in order to allow autoplay.
+  SpecialPowers.wrap(document).notifyUserGestureActivation();
+  node.start();
+
+  await once(ac, "blocked");
+  is(ac.state, "suspended", `AudioContext should not be resumed.`);
+
+  // reset the activation flag of the document in order not to interfere next test.
+  SpecialPowers.wrap(document).clearUserGestureActivation();
+}
+
+</script>
diff --git a/dom/media/autoplay/test/mochitest/test_streams_autoplay.html b/dom/media/autoplay/test/mochitest/test_streams_autoplay.html
new file mode 100644
index 0000000000..0b8630a323
--- /dev/null
+++ b/dom/media/autoplay/test/mochitest/test_streams_autoplay.html
@@ -0,0 +1,47 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <title>Test that a MediaStream source triggers autoplay</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+  <script type="text/javascript" src="manifest.js"></script>
+</head>
+<body>
+<pre id="test">
+<script class="testbody" type="text/javascript">
+/* import-globals-from ../../../test/manifest.js */
+SimpleTest.waitForExplicitFinish();
+
+var media = getPlayableVideo(gSmallTests);
+
+if (media == null) {
+  todo(false, "No media supported.");
+  SimpleTest.finish();
+} else {
+  function startTest() {
+    var v1 = document.createElement('video');
+    var v2 = document.createElement('video');
+    v1.preload = 'metadata';
+    v2.autoplay = true;
+    document.body.appendChild(v1);
+    document.body.appendChild(v2);
+
+    v1.src = media.name;
+    v1.onloadedmetadata = function() {
+      v2.srcObject = v1.mozCaptureStream();
+      v1.play();
+    };
+
+    v2.addEventListener('playing', function() {
+      ok(true, "playback started");
+      SimpleTest.finish();
+    }, {once: true});
+  }
+
+  startTest();
+}
+
+</script>
+</pre>
+</body>
+</html>