1. Audio element should also repect auotplay setting

fix brave/browser-laptop#11988
fix brave/browser-laptop#11527

2. Don't check user initiated video
fix brave/browser-laptop#12149

3. Default allow muted media
fix brave/browser-laptop#12152

4. Default allow for local files
fix brave/browser-laptop#8929

Auditors: @bridiver, @bbondy, @bsclifton

patches/master_patch.patch

@@ -1893,43 +1893,28 @@ index 19c7b569f19849f8fbb26c1faf2ac52f8fe7c566..0294416a183a13cd925adf89dd587289
    if (GetWebMediaPlayer())
      GetWebMediaPlayer()->SetVolume(EffectiveMediaVolume());
 diff --git a/third_party/WebKit/Source/core/html/media/AutoplayPolicy.cpp b/third_party/WebKit/Source/core/html/media/AutoplayPolicy.cpp
-index 9162bc3ba51153a494aa218007511054cdebbad7..e685ea161db22661d3a643cd37df8924c4439d15 100644
+index 9162bc3ba51153a494aa218007511054cdebbad7..9c3e62b6285ec8cae7de7f0c32d904aa3f406b3e 100644
 --- a/third_party/WebKit/Source/core/html/media/AutoplayPolicy.cpp
 +++ b/third_party/WebKit/Source/core/html/media/AutoplayPolicy.cpp
-@@ -264,6 +264,11 @@ void AutoplayPolicy::UnlockUserGesture() {
- }
-
- bool AutoplayPolicy::IsGestureNeededForPlayback() const {
-+  // MUON(darkdh): check autoplay setting
-+  if (!IsAutoplayAllowedPerSettings()) {
-+    return true;
-+  }
-+
-   if (!IsLockedPendingUserGesture())
-     return false;
-
-@@ -280,14 +285,16 @@ bool AutoplayPolicy::IsGestureNeededForPlaybackIfPendingUserGestureIsLocked()
+@@ -280,6 +280,7 @@ bool AutoplayPolicy::IsGestureNeededForPlaybackIfPendingUserGestureIsLocked()
    // - Data Saver is not enabled;
    // - Preload was not disabled (low end devices);
    // - Autoplay is enabled in settings;
--  if (element_->IsHTMLVideoElement() && element_->muted() &&
--      RuntimeEnabledFeatures::AutoplayMutedVideosEnabled() &&
--      !(element_->GetDocument().GetSettings() &&
--        element_->GetDocument().GetSettings()->GetDataSaverEnabled()) &&
--      !(element_->GetDocument().GetSettings() &&
--        element_->GetDocument()
--            .GetSettings()
--            ->GetForcePreloadNoneForMediaElements()) &&
-+  // if (element_->IsHTMLVideoElement() && element_->muted() &&
-+  //     RuntimeEnabledFeatures::AutoplayMutedVideosEnabled() &&
-+  //     !(element_->GetDocument().GetSettings() &&
-+  //       element_->GetDocument().GetSettings()->GetDataSaverEnabled()) &&
-+  //     !(element_->GetDocument().GetSettings() &&
-+  //       element_->GetDocument()
-+  //           .GetSettings()
-+  //           ->GetForcePreloadNoneForMediaElements()) &&
-+  // MUON(darkdh): only check autoplay setting
-+  if (element_->IsHTMLVideoElement() &&
++#if defined(MUON_CHROMIUM_BUILD)
+   if (element_->IsHTMLVideoElement() && element_->muted() &&
+       RuntimeEnabledFeatures::AutoplayMutedVideosEnabled() &&
+       !(element_->GetDocument().GetSettings() &&
+@@ -288,6 +289,13 @@ bool AutoplayPolicy::IsGestureNeededForPlaybackIfPendingUserGestureIsLocked()
+         element_->GetDocument()
+             .GetSettings()
+             ->GetForcePreloadNoneForMediaElements()) &&
++#else
++  // MUON(darkdh): default allow muted media and local files
++  // only check autoplay setting for non-muted and non-local one
++  if ((element_->IsHTMLVideoElement() || element_->IsAudioElement()) &&
++      element_->muted() ||
++      element_->GetDocument().origin() == String("null") ||
++#endif
        IsAutoplayAllowedPerSettings()) {
      return false;
    }