Delete old RTCVideoDecoder code path.

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 "third_party/libjingle/source/talk/app/webrtc/mediastreaminterface.h"
 #include "ui/gfx/size.h"
 #include "webkit/media/video_frame_provider.h"
 
 namespace base {
 class MessageLoopProxy;
 }
 
 namespace content {
 
 // RTCVideoRenderer is a webkit_media::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
 // 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 webkit_media::VideoFrameProvider),
       NON_EXPORTED_BASE(public webrtc::VideoRendererInterface) {
  public:
   RTCVideoRenderer(
       webrtc::VideoTrackInterface* video_track,
       const base::Closure& error_cb,
       const RepaintCB& repaint_cb);
 
   // webkit_media::VideoFrameProvider implementation. Called on the main thread.
@@ skipping 26 matching lines @@
 
   // The video track the renderer is connected to.
   scoped_refptr<webrtc::VideoTrackInterface> video_track_;
 
   DISALLOW_COPY_AND_ASSIGN(RTCVideoRenderer);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_LOCAL_VIDEO_RENDERER_H_