Add VideoTrackSink interface to content/public

content/renderer/media/rtc_video_renderer.h

 // Copyright (c) 2012 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_LOCAL_VIDEO_RENDERER_H_
 #define CONTENT_RENDERER_MEDIA_LOCAL_VIDEO_RENDERER_H_
 
 #include "base/callback.h"
 #include "content/common/content_export.h"
+#include "content/public/renderer/media/video_track_sink.h"
 #include "content/renderer/media/video_frame_provider.h"
-#include "third_party/libjingle/source/talk/app/webrtc/mediastreaminterface.h"
+#include "third_party/WebKit/public/platform/WebMediaStreamTrack.h"
 #include "ui/gfx/size.h"
 
 namespace base {
 class MessageLoopProxy;
 }
 
 namespace content {
 
 // RTCVideoRenderer is a VideoFrameProvider designed for rendering
 // Video MediaStreamTracks,
 // http://dev.w3.org/2011/webrtc/editor/getusermedia.html#mediastreamtrack
-// RTCVideoRenderer implements webrtc::VideoRendererInterface in order to render
-// video frames provided from a webrtc::VideoTrackInteface.
-// RTCVideoRenderer register itself to the Video Track when the
+// RTCVideoRenderer implements VideoTrackSink in order to render
+// video frames provided from a VideoTrack.
+// RTCVideoRenderer register itself as a sink to the VideoTrack when the
 // VideoFrameProvider is started and deregisters itself when it is stopped.
-// Calls to webrtc::VideoTrackInterface must occur on the main thread.
 // TODO(wuchengli): Add unit test. See the link below for reference.
 // http://src.chromium.org/viewvc/chrome/trunk/src/content/renderer/media/rtc_vi
 // deo_decoder_unittest.cc?revision=180591&view=markup
 class CONTENT_EXPORT RTCVideoRenderer
     : NON_EXPORTED_BASE(public VideoFrameProvider),
-      NON_EXPORTED_BASE(public webrtc::VideoRendererInterface),
-      NON_EXPORTED_BASE(public webrtc::ObserverInterface) {
+      NON_EXPORTED_BASE(public VideoTrackSink) {
  public:
-  RTCVideoRenderer(
-      webrtc::VideoTrackInterface* video_track,
-      const base::Closure& error_cb,
-      const RepaintCB& repaint_cb);
+  RTCVideoRenderer(const blink::WebMediaStreamTrack& video_track,
+                   const base::Closure& error_cb,
+                   const RepaintCB& repaint_cb);
 
   // VideoFrameProvider implementation. Called on the main thread.
   virtual void Start() OVERRIDE;
   virtual void Stop() OVERRIDE;
   virtual void Play() OVERRIDE;
   virtual void Pause() OVERRIDE;
 
-  // webrtc::VideoRendererInterface implementation. May be called on
-  // a different thread.
-  virtual void SetSize(int width, int height) OVERRIDE;
-  virtual void RenderFrame(const cricket::VideoFrame* frame) OVERRIDE;
-
-  // webrtc::ObserverInterface implementation.
-  virtual void OnChanged() OVERRIDE;
-
  protected:
   virtual ~RTCVideoRenderer();
 
  private:
   enum State {
     kStarted,
     kPaused,
     kStopped,
   };
 
-  void MaybeRenderSignalingFrame();
-  void DoRenderFrameOnMainThread(scoped_refptr<media::VideoFrame> video_frame);
+  // VideoTrackSink implementation. Called on the main thread.
+  virtual void OnVideoFrame(
+      const scoped_refptr<media::VideoFrame>& frame) OVERRIDE;
+  virtual void OnSourceChangedState(
+      ReadyState state) OVERRIDE;
+
+  void MaybeRenderSignalingFrame(ReadyState state);
 
   base::Closure error_cb_;
   RepaintCB repaint_cb_;
   scoped_refptr<base::MessageLoopProxy> message_loop_proxy_;
   State state_;
-
-  // The video track the renderer is connected to.
-  scoped_refptr<webrtc::VideoTrackInterface> video_track_;
+  blink::WebMediaStreamTrack video_track_;
 
   DISALLOW_COPY_AND_ASSIGN(RTCVideoRenderer);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_LOCAL_VIDEO_RENDERER_H_