Revert of Use VoiceChannel/VideoChannel directly from RtpSender/RtpReceiver.

webrtc/api/peerconnection.h

 /*
  *  Copyright 2012 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 156 matching lines @@
   // Implements MessageHandler.
   void OnMessage(rtc::Message* msg) override;
 
   void CreateAudioReceiver(MediaStreamInterface* stream,
                            const std::string& track_id,
                            uint32_t ssrc);
 
   void CreateVideoReceiver(MediaStreamInterface* stream,
                            const std::string& track_id,
                            uint32_t ssrc);
+  void StopReceivers(cricket::MediaType media_type);
   void DestroyReceiver(const std::string& track_id);
   void DestroyAudioSender(MediaStreamInterface* stream,
                           AudioTrackInterface* audio_track,
                           uint32_t ssrc);
   void DestroyVideoSender(MediaStreamInterface* stream,
                           VideoTrackInterface* video_track);
 
   // Implements IceObserver
   void OnIceConnectionChange(IceConnectionState new_state) override;
   void OnIceGatheringChange(IceGatheringState new_state) override;
@@ skipping 130 matching lines @@
       const std::string& label,
       const InternalDataChannelInit* config);
 
   // Checks if any data channel has been added.
   bool HasDataChannels() const;
 
   void AllocateSctpSids(rtc::SSLRole role);
   void OnSctpDataChannelClosed(DataChannel* channel);
 
   // Notifications from WebRtcSession relating to BaseChannels.
-  void OnVoiceChannelCreated();
   void OnVoiceChannelDestroyed();
-  void OnVideoChannelCreated();
   void OnVideoChannelDestroyed();
   void OnDataChannelCreated();
   void OnDataChannelDestroyed();
   // Called when the cricket::DataChannel receives a message indicating that a
   // webrtc::DataChannel should be opened.
   void OnDataChannelOpenMessage(const std::string& label,
                                 const InternalDataChannelInit& config);
 
   RtpSenderInternal* FindSenderById(const std::string& id);
 
@@ skipping 69 matching lines @@
       rtc::scoped_refptr<RtpReceiverProxyWithInternal<RtpReceiverInternal>>>
       receivers_;
 
   std::unique_ptr<WebRtcSession> session_;
   std::unique_ptr<StatsCollector> stats_;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_API_PEERCONNECTION_H_