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 c93644fe324f57e830dbdf6db11fb05a130e4b37..cae35ea7bc4350de140f40e8fd1eb3e6b2d454f8 100644
--- a/third_party/WebKit/Source/core/html/HTMLMediaElement.h
+++ b/third_party/WebKit/Source/core/html/HTMLMediaElement.h
@@ -352,7 +352,7 @@ private:
     void cancelledRemotePlaybackRequest() final;
     void requestReload(const WebURL&) final;
 
-    void loadTimerFired(TimerBase*);
+    void textTrackLoadTimerFired(TimerBase*);
     void progressEventTimerFired(TimerBase*);
     void playbackProgressTimerFired(TimerBase*);
     void startPlaybackProgressTimer();
@@ -369,6 +369,7 @@ private:
     // loading
     void invokeLoadAlgorithm();
     void invokeResourceSelectionAlgorithm();
+    void continueResourceSelectionAlgorithm();
     void loadInternal();
     void selectMediaResource();
     void loadResource(const WebMediaPlayerSource&, const ContentType&);
@@ -379,6 +380,7 @@ private:
     void loadSourceFromObject();
     void loadSourceFromAttribute();
     void loadNextSourceChild();
+    void loadNextSourceChildAfterError();
     void clearMediaPlayer();
     void clearMediaPlayerAndAudioSourceProviderClientWithoutLocking();
     bool havePotentialSourceChild();
@@ -495,7 +497,7 @@ private:
 
     void onVisibilityChangedForAutoplay(bool isVisible);
 
-    UnthrottledThreadTimer<HTMLMediaElement> m_loadTimer;
+    UnthrottledThreadTimer<HTMLMediaElement> m_textTrackLoadTimer;
     UnthrottledThreadTimer<HTMLMediaElement> m_progressEventTimer;
     UnthrottledThreadTimer<HTMLMediaElement> m_playbackProgressTimer;
     UnthrottledThreadTimer<HTMLMediaElement> m_audioTracksTimer;
@@ -564,9 +566,6 @@ private:
 
     double m_fragmentEndTime;
 
-    typedef unsigned PendingActionFlags;
-    PendingActionFlags m_pendingActionFlags;
-
     // FIXME: HTMLMediaElement has way too many state bits.
     bool m_lockedPendingUserGesture : 1;
     bool m_playing : 1;
@@ -606,6 +605,9 @@ private:
     HeapVector<Member<ScriptPromiseResolver>> m_playPromiseRejectList;
     ExceptionCode m_playPromiseErrorCode;
 
+    std::unique_ptr<CancellableTaskFactory> m_resourceSelectionAlgorithmContinuationTask;
+    std::unique_ptr<CancellableTaskFactory> m_loadNextSourceChildAfterErrorTask;
+
     // This is a weak reference, since m_audioSourceNode holds a reference to us.
     // TODO(Oilpan): Consider making this a strongly traced pointer with oilpan where strong cycles are not a problem.
     GC_PLUGIN_IGNORE("http://crbug.com/404577")