Implement a source for remote video tracks.

content/renderer/media/remote_media_stream_impl.h

Index: content/renderer/media/remote_media_stream_impl.h
diff --git a/content/renderer/media/remote_media_stream_impl.h b/content/renderer/media/remote_media_stream_impl.h
index 3263ed458e9a36952cf7734a6374a7c118943bb6..6b1554aff066465eeb37da516759f4e789031bd2 100644
--- a/content/renderer/media/remote_media_stream_impl.h
+++ b/content/renderer/media/remote_media_stream_impl.h
@@ -18,7 +18,7 @@
 
 namespace content {
 
-class RemoteMediaStreamTrackObserver;
+class RemoteMediaStreamTrackAdapter;
 
 // RemoteMediaStreamImpl serves as a container and glue between remote webrtc
 // MediaStreams and WebKit MediaStreams. For each remote MediaStream received
@@ -39,8 +39,8 @@ class CONTENT_EXPORT RemoteMediaStreamImpl
   virtual void OnChanged() OVERRIDE;
 
   scoped_refptr<webrtc::MediaStreamInterface> webrtc_stream_;
-  ScopedVector<RemoteMediaStreamTrackObserver> audio_track_observers_;
-  ScopedVector<RemoteMediaStreamTrackObserver> video_track_observers_;
+  ScopedVector<RemoteMediaStreamTrackAdapter> video_track_observers_;
+  ScopedVector<RemoteMediaStreamTrackAdapter> audio_track_observers_;
   blink::WebMediaStream webkit_stream_;
 
   DISALLOW_COPY_AND_ASSIGN(RemoteMediaStreamImpl);