Implements MediaStreamVideoSource.

content/renderer/media/media_stream_video_source.h

Index: content/renderer/media/media_stream_video_source.h
diff --git a/content/renderer/media/media_stream_video_source.h b/content/renderer/media/media_stream_video_source.h
index 2130916b1b9c296813fbb94b9234241a8e916385..534593313ad606fd2b6629daf69b3a538a9235e0 100644
--- a/content/renderer/media/media_stream_video_source.h
+++ b/content/renderer/media/media_stream_video_source.h
@@ -19,6 +19,8 @@ class VideoFrame;
 
 namespace content {
 
+class MediaStreamDependencyFactory;
+
 // MediaStreamVideoSource is an interface used for sending video frames to a
 // MediaStreamVideoTrack.
 // http://dev.w3.org/2011/webrtc/editor/getusermedia.html
@@ -26,14 +28,18 @@ namespace content {
 class CONTENT_EXPORT MediaStreamVideoSource
     : public MediaStreamSourceExtraData {
  public:
+  MediaStreamVideoSource(MediaStreamDependencyFactory* factory);
+
+  bool Init();
+
   // Puts |track| in the registered tracks list. Will later
   // deliver frames to it according to |constraints|.
-  void AddTrack(const blink::WebMediaStreamTrack& track,
+  bool AddTrack(const blink::WebMediaStreamTrack& track,
                 const blink::WebMediaConstraints& constraints);
 
   // Removes |track| from the registered tracks list, i.e. will stop delivering
   // frame to |track|.
-  void RemoveTrack(const blink::WebMediaStreamTrack& track);
+  bool RemoveTrack(const blink::WebMediaStreamTrack& track);
 
  protected:
   // Sets ready state and notifies the ready state to all registered tracks.
@@ -43,6 +49,12 @@ class CONTENT_EXPORT MediaStreamVideoSource
   virtual void DeliverVideoFrame(const scoped_refptr<media::VideoFrame>& frame);
 
   virtual ~MediaStreamVideoSource();
+
+ private:
+  MediaStreamDependencyFactory* factory_;
+  scoped_refptr<webrtc::VideoSourceInterface> adapter_;
+  int width_;
+  int height_;
 };
 
 }  // namespace content