Propagate audible state from player to the containing tab

media/base/android/media_player_manager.h

Index: media/base/android/media_player_manager.h
diff --git a/media/base/android/media_player_manager.h b/media/base/android/media_player_manager.h
index 58a712f383beb3a9fda231b0b42dbbc99f863871..de23d4fe4f1c7e8defd90c0b9ad5ae7f10c0da69 100644
--- a/media/base/android/media_player_manager.h
+++ b/media/base/android/media_player_manager.h
@@ -63,6 +63,9 @@ class MEDIA_EXPORT MediaPlayerManager {
   // Called when video size has changed. Args: player ID, width, height.
   virtual void OnVideoSizeChanged(int player_id, int width, int height) = 0;
 
+  // Called when the player thinks it stopped or started making sound.
+  virtual void OnAudibleStateChanged(int player_id, bool is_audible_now) = 0;
+
   // Returns the player that's in the fullscreen mode currently.
   virtual MediaPlayerAndroid* GetFullscreenPlayer() = 0;