Make RendererMediaPlayerManager a RenderFrameObserver.

content/renderer/render_view_impl.h

Index: content/renderer/render_view_impl.h
diff --git a/content/renderer/render_view_impl.h b/content/renderer/render_view_impl.h
index 7237e9889b323262b0a0f16550d4b01b6f63633b..ca0fe18f80e635ed24ee52605c2a172dfa809316 100644
--- a/content/renderer/render_view_impl.h
+++ b/content/renderer/render_view_impl.h
@@ -155,7 +155,6 @@ struct FileChooserParams;
 struct RenderViewImplParams;
 
 #if defined(OS_ANDROID)
-class RendererMediaPlayerManager;
 class WebMediaPlayerProxyAndroid;
 #endif
 
@@ -776,7 +775,6 @@ class CONTENT_EXPORT RenderViewImpl
   void OnUpdateTopControlsState(bool enable_hiding,
                                 bool enable_showing,
                                 bool animate);
-  void OnPauseVideo();
   void OnExtractSmartClipData(const gfx::Rect& rect);
   void GetSelectionRootBounds(gfx::Rect* bounds) const;
 #elif defined(OS_MACOSX)
@@ -1113,10 +1111,6 @@ class CONTENT_EXPORT RenderViewImpl
   typedef std::vector< linked_ptr<ContentDetector> > ContentDetectorList;
   ContentDetectorList content_detectors_;
 
-  // The media player manager for managing all the media players on this view
-  // for communicating with the real media player objects in browser process.
-  RendererMediaPlayerManager* media_player_manager_;
-
   // A date/time picker object for date and time related input elements.
   scoped_ptr<RendererDateTimePicker> date_time_picker_client_;
 #endif