Detect change on video/viewport intersection when rendered remotely

media/blink/webmediaplayer_impl.h

Index: media/blink/webmediaplayer_impl.h
diff --git a/media/blink/webmediaplayer_impl.h b/media/blink/webmediaplayer_impl.h
index 020adcea097348c4a25ddcf5e7fe15aac47540d1..761dbc7a880fbcb99a99b1f58551d49e8fa81d36 100644
--- a/media/blink/webmediaplayer_impl.h
+++ b/media/blink/webmediaplayer_impl.h
@@ -220,6 +220,10 @@ class MEDIA_BLINK_EXPORT WebMediaPlayerImpl
   // then seek to resume playback at the current position.
   void ScheduleRestart();
 
+  // Called when requests to activate monitoring changes on viewport
+  // intersection.
+  void ActivateViewportIntersectionMonitoring(bool activate);
+
   // Distinct states that |delegate_| can be in.
   // TODO(sandersd): This should move into WebMediaPlayerDelegate.
   // (Public for testing.)