Introduce TimeSource notifications to the VideoRenderer.

media/renderers/video_renderer_impl.h

Index: media/renderers/video_renderer_impl.h
diff --git a/media/renderers/video_renderer_impl.h b/media/renderers/video_renderer_impl.h
index ec3d72d2714ff811c0d88c2a8dc57fc3197bef90..33938dc0cc926d567381a866c793f0754aaaccb3 100644
--- a/media/renderers/video_renderer_impl.h
+++ b/media/renderers/video_renderer_impl.h
@@ -65,6 +65,7 @@ class MEDIA_EXPORT VideoRendererImpl
                   const base::Closure& waiting_for_decryption_key_cb) override;
   void Flush(const base::Closure& callback) override;
   void StartPlayingFrom(base::TimeDelta timestamp) override;
+  void OnTimeStateChanged(bool time_progressing) override;
 
   // PlatformThread::Delegate implementation.
   void ThreadMain() override;