Update MediaStreamTrack::Stop to latest draft.

content/renderer/media/media_stream_video_track.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_RENDERER_MEDIA_MEDIA_STREAM_VIDEO_TRACK_H_
 #define CONTENT_RENDERER_MEDIA_MEDIA_STREAM_VIDEO_TRACK_H_
 
 #include <vector>
 
 #include "base/compiler_specific.h"
@@ skipping 44 matching lines @@
        bool enabled,
        MediaStreamDependencyFactory* factory);
   virtual ~MediaStreamVideoTrack();
   virtual void AddSink(MediaStreamVideoSink* sink);
   virtual void RemoveSink(MediaStreamVideoSink* sink);
 
   // TODO(perkj): GetVideoAdapter is webrtc specific. Move GetVideoAdapter to
   // where the track is added to a RTCPeerConnection. crbug/323223.
   virtual webrtc::VideoTrackInterface* GetVideoAdapter() OVERRIDE;
   virtual void SetEnabled(bool enabled) OVERRIDE;
+  virtual void Stop() OVERRIDE;
 
   void OnVideoFrame(const scoped_refptr<media::VideoFrame>& frame);
   void OnReadyStateChanged(blink::WebMediaStreamSource::ReadyState state);
 
  protected:
   // Used to DCHECK that we are called on the correct thread.
   base::ThreadChecker thread_checker_;
 
  private:
   bool enabled_;
   std::vector<MediaStreamVideoSink*> sinks_;
 
   // Weak ref to the source this tracks is connected to.  |source_| is owned
   // by the blink::WebMediaStreamSource and is guaranteed to outlive the
   // track.
   MediaStreamVideoSource* source_;
 
   // Weak ref to a MediaStreamDependencyFactory, owned by the RenderThread.
   // It's valid for the lifetime of RenderThread.
   MediaStreamDependencyFactory* factory_;
 
   DISALLOW_COPY_AND_ASSIGN(MediaStreamVideoTrack);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_MEDIA_STREAM_VIDEO_TRACK_H_