Media element resource selection algorithm should "await a stable state"

third_party/WebKit/Source/core/html/HTMLMediaElement.h

Index: third_party/WebKit/Source/core/html/HTMLMediaElement.h
diff --git a/third_party/WebKit/Source/core/html/HTMLMediaElement.h b/third_party/WebKit/Source/core/html/HTMLMediaElement.h
index 2a0ec2e9f3a4f7dae2749d73f9c5738d08013f5e..5af06f17469d9ca4ade4ff1dd829dd3ae7f6658b 100644
--- a/third_party/WebKit/Source/core/html/HTMLMediaElement.h
+++ b/third_party/WebKit/Source/core/html/HTMLMediaElement.h
@@ -280,6 +280,8 @@ protected:
     virtual void setDisplayMode(DisplayMode mode) { m_displayMode = mode; }
 
 private:
+    class Task;
+
     void resetMediaPlayerAndMediaSource();
 
     bool alwaysCreateUserAgentShadowRoot() const final { return true; }
@@ -331,7 +333,7 @@ private:
     void connectedToRemoteDevice() final;
     void disconnectedFromRemoteDevice() final;
 
-    void loadTimerFired(Timer<HTMLMediaElement>*);
+    void textTrackLoadTimerFired(Timer<HTMLMediaElement>*);
     void progressEventTimerFired(Timer<HTMLMediaElement>*);
     void playbackProgressTimerFired(Timer<HTMLMediaElement>*);
     void startPlaybackProgressTimer();
@@ -348,13 +350,14 @@ private:
     // loading
     void invokeLoadAlgorithm();
     void invokeResourceSelectionAlgorithm();
+    void continueResourceSelectionAlgorithm();
+    void enqueueMicrotask();
     void loadInternal();
     void selectMediaResource();
     void loadResource(const KURL&, ContentType&);
     void startPlayerLoad();
     void setPlayerPreload();
     WebMediaPlayer::LoadType loadType() const;
-    void scheduleNextSourceChild();
     void loadNextSourceChild();
     void clearMediaPlayer();
     void clearMediaPlayerAndAudioSourceProviderClientWithoutLocking();
@@ -465,7 +468,7 @@ private:
     void rejectPlayPromises();
     void rejectPlayPromises(ExceptionCode, const String&);
 
-    UnthrottledTimer<HTMLMediaElement> m_loadTimer;
+    UnthrottledTimer<HTMLMediaElement> m_textTrackLoadTimer;
     UnthrottledTimer<HTMLMediaElement> m_progressEventTimer;
     UnthrottledTimer<HTMLMediaElement> m_playbackProgressTimer;
     UnthrottledTimer<HTMLMediaElement> m_audioTracksTimer;
@@ -533,9 +536,6 @@ private:
 
     double m_fragmentEndTime;
 
-    typedef unsigned PendingActionFlags;
-    PendingActionFlags m_pendingActionFlags;
-
     // FIXME: HTMLMediaElement has way too many state bits.
     bool m_userGestureRequiredForPlay : 1;
     bool m_playing : 1;
@@ -582,6 +582,8 @@ private:
     GC_PLUGIN_IGNORE("http://crbug.com/404577")
     RawPtrWillBeWeakMember<AudioSourceProviderClient> m_audioSourceNode;
 
+    WeakPtr<Task> m_pendingTask; // owned by Microtask
+
     // AudioClientImpl wraps an AudioSourceProviderClient.
     // When the audio format is known, Chromium calls setFormat().
     class AudioClientImpl final : public GarbageCollectedFinalized<AudioClientImpl>, public WebAudioSourceProviderClient {