Remove unimplemented VideoChannel code.

talk/media/base/mediachannel.h

 /*
  * libjingle
  * Copyright 2004 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 988 matching lines @@
                             bool enable,
                             const VideoOptions* options) = 0;
   // Sets the renderer object to be used for the specified stream.
   // If SSRC is 0, the renderer is used for the 'default' stream.
   virtual bool SetRenderer(uint32_t ssrc, VideoRenderer* renderer) = 0;
   // If |ssrc| is 0, replace the default capturer (engine capturer) with
   // |capturer|. If |ssrc| is non zero create a new stream with |ssrc| as SSRC.
   virtual bool SetCapturer(uint32_t ssrc, VideoCapturer* capturer) = 0;
   // Gets quality stats for the channel.
   virtual bool GetStats(VideoMediaInfo* info) = 0;
-  // Send an intra frame to the receivers.
-  virtual bool SendIntraFrame() = 0;
-  // Reuqest each of the remote senders to send an intra frame.
-  virtual bool RequestIntraFrame() = 0;
-  virtual void UpdateAspectRatio(int ratio_w, int ratio_h) = 0;
 
  protected:
   VideoRenderer *renderer_;
 };
 
 enum DataMessageType {
   // Chrome-Internal use only.  See SctpDataMediaChannel for the actual PPID
   // values.
   DMT_NONE = 0,
   DMT_CONTROL = 1,
@@ skipping 113 matching lines @@
   // Signal when the media channel is ready to send the stream. Arguments are:
   //     writable(bool)
   sigslot::signal1<bool> SignalReadyToSend;
   // Signal for notifying that the remote side has closed the DataChannel.
   sigslot::signal1<uint32_t> SignalStreamClosedRemotely;
 };
 
 }  // namespace cricket
 
 #endif  // TALK_MEDIA_BASE_MEDIACHANNEL_H_