Detect change on video/viewport intersection when rendered remotely

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 540c9271134c84ac0359ee3f709e8c55e934a562..4eacafb934528f3ddeadcfcec473d011f3e1cc99 100644
--- a/third_party/WebKit/Source/core/html/HTMLMediaElement.h
+++ b/third_party/WebKit/Source/core/html/HTMLMediaElement.h
@@ -397,10 +397,12 @@ class CORE_EXPORT HTMLMediaElement : public HTMLElement,
   WebMediaPlayer::TrackId getSelectedVideoTrackId() final;
   bool isAutoplayingMuted() final;
   void requestReload(const WebURL&) final;
+  void enableMonitorViewportIntersection(bool) final;
 
   void loadTimerFired(TimerBase*);
   void progressEventTimerFired(TimerBase*);
   void playbackProgressTimerFired(TimerBase*);
+  void checkViewportIntersectionTimerFired(TimerBase*);
   void startPlaybackProgressTimer();
   void startProgressEventTimer();
   void stopPeriodicTimers();
@@ -541,7 +543,6 @@ class CORE_EXPORT HTMLMediaElement : public HTMLElement,
 
   void onVisibilityChangedForAutoplay(bool isVisible);
 
-  void checkViewportIntersectionChanged();
   void viewportFillDebouncerTimerFired(TimerBase*);
 
   UnthrottledThreadTimer<HTMLMediaElement> m_loadTimer;
@@ -549,6 +550,7 @@ class CORE_EXPORT HTMLMediaElement : public HTMLElement,
   UnthrottledThreadTimer<HTMLMediaElement> m_playbackProgressTimer;
   UnthrottledThreadTimer<HTMLMediaElement> m_audioTracksTimer;
   UnthrottledThreadTimer<HTMLMediaElement> m_viewportFillDebouncerTimer;
+  UnthrottledThreadTimer<HTMLMediaElement> m_checkViewportIntersectionTimer;
   Member<TimeRanges> m_playedTimeRanges;
   Member<GenericEventQueue> m_asyncEventQueue;