Revert of Storing raw audio sink for default audio track.

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 1019 matching lines @@
   // Send a DTMF |event|. The DTMF out-of-band signal will be used.
   // The |ssrc| should be either 0 or a valid send stream ssrc.
   // The valid value for the |event| are 0 to 15 which corresponding to
   // DTMF event 0-9, *, #, A-D.
   virtual bool InsertDtmf(uint32_t ssrc, int event, int duration) = 0;
   // Gets quality stats for the channel.
   virtual bool GetStats(VoiceMediaInfo* info) = 0;
 
   virtual void SetRawAudioSink(
       uint32_t ssrc,
-      const rtc::scoped_refptr<webrtc::AudioSinkInterface>& sink) = 0;
+      rtc::scoped_ptr<webrtc::AudioSinkInterface> sink) = 0;
 };
 
 struct VideoSendParameters : RtpSendParameters<VideoCodec, VideoOptions> {
 };
 
 struct VideoRecvParameters : RtpParameters<VideoCodec> {
 };
 
 class VideoMediaChannel : public MediaChannel {
  public:
@@ skipping 167 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_