Added VideoTrackInterface::GetSink method, for use by VideoRtpReceiver. Get rid of FrameInput.

talk/app/webrtc/mediastreaminterface.h

 /*
  * libjingle
  * Copyright 2012 Google Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  *  1. Redistributions of source code must retain the above copyright notice,
  *     this list of conditions and the following disclaimer.
  *  2. Redistributions in binary form must reproduce the above copyright notice,
@@ skipping 127 matching lines @@
 
 class VideoSourceInterface;
 
 class VideoTrackInterface : public MediaStreamTrackInterface {
  public:
   // Register a renderer that will render all frames received on this track.
   virtual void AddRenderer(VideoRendererInterface* renderer) = 0;
   // Deregister a renderer.
   virtual void RemoveRenderer(VideoRendererInterface* renderer) = 0;
 
   virtual VideoSourceInterface* GetSource() const = 0;

[pthatcher1, 2016/02/03 16:24:29]

As mentioned in the other CL, I think we can just have VideoTrackInterface
implement rtc::VideoSinkInterface<cricket::VideoFrame> and then we don't need
GetSink() and we can just use a VideoTrackInterface as a sink.

+  virtual rtc::VideoSinkInterface<cricket::VideoFrame>* GetSink() = 0;
 
  protected:
   virtual ~VideoTrackInterface() {}
 };
 
 // Interface for receiving audio data from a AudioTrack.
 class AudioTrackSinkInterface {
  public:
   virtual void OnData(const void* audio_data,
                       int bits_per_sample,
@@ skipping 108 matching lines @@
   virtual bool RemoveTrack(AudioTrackInterface* track) = 0;
   virtual bool RemoveTrack(VideoTrackInterface* track) = 0;
 
  protected:
   virtual ~MediaStreamInterface() {}
 };
 
 }  // namespace webrtc
 
 #endif  // TALK_APP_WEBRTC_MEDIASTREAMINTERFACE_H_