Propagate audible state from player to the containing tab

content/browser/media/android/browser_media_player_manager.h

Index: content/browser/media/android/browser_media_player_manager.h
diff --git a/content/browser/media/android/browser_media_player_manager.h b/content/browser/media/android/browser_media_player_manager.h
index 3925eeba96f1058479738cc788a3e25c573b3de6..0fc27ba60bf0be43421df3198543b499e504671b 100644
--- a/content/browser/media/android/browser_media_player_manager.h
+++ b/content/browser/media/android/browser_media_player_manager.h
@@ -27,6 +27,7 @@ class DemuxerAndroid;
 struct MediaPlayerHostMsg_Initialize_Params;
 
 namespace content {
+class AudioMonitorAndroid;
 class BrowserDemuxerAndroid;
 class ContentViewCoreImpl;
 class ExternalVideoSurfaceContainer;
@@ -42,7 +43,8 @@ class CONTENT_EXPORT BrowserMediaPlayerManager
     : public media::MediaPlayerManager {
  public:
   // Permits embedders to provide an extended version of the class.
-  typedef BrowserMediaPlayerManager* (*Factory)(RenderFrameHost*);
+  typedef BrowserMediaPlayerManager* (*Factory)(RenderFrameHost*,
+                                                AudioMonitorAndroid*);
   static void RegisterFactory(Factory factory);
 
   // Permits embedders to handle custom urls.
@@ -50,7 +52,9 @@ class CONTENT_EXPORT BrowserMediaPlayerManager
       media::MediaUrlInterceptor* media_url_interceptor);
 
   // Returns a new instance using the registered factory if available.
-  static BrowserMediaPlayerManager* Create(RenderFrameHost* rfh);
+  static BrowserMediaPlayerManager* Create(
+      RenderFrameHost* rfh,
+      AudioMonitorAndroid* audio_monitor);
 
   ContentViewCoreImpl* GetContentViewCore() const;
 
@@ -87,6 +91,9 @@ class CONTENT_EXPORT BrowserMediaPlayerManager
   virtual void OnError(int player_id, int error) override;
   virtual void OnVideoSizeChanged(
       int player_id, int width, int height) override;
+  virtual void OnAudibleStateChanged(
+      int player_id, bool is_audible_now) override;
+
   virtual media::MediaResourceGetter* GetMediaResourceGetter() override;
   virtual media::MediaUrlInterceptor* GetMediaUrlInterceptor() override;
   virtual media::MediaPlayerAndroid* GetFullscreenPlayer() override;
@@ -122,7 +129,8 @@ class CONTENT_EXPORT BrowserMediaPlayerManager
 
  protected:
   // Clients must use Create() or subclass constructor.
-  explicit BrowserMediaPlayerManager(RenderFrameHost* render_frame_host);
+  BrowserMediaPlayerManager(RenderFrameHost* render_frame_host,
+                            AudioMonitorAndroid* audio_monitor);
 
   WebContents* web_contents() const { return web_contents_; }
 
@@ -172,6 +180,8 @@ class CONTENT_EXPORT BrowserMediaPlayerManager
 
   RenderFrameHost* const render_frame_host_;
 
+  AudioMonitorAndroid* audio_monitor_;
+
   // An array of managed players.
   ScopedVector<media::MediaPlayerAndroid> players_;