Revert of Storing raw audio sink for default audio track.

talk/media/base/fakemediaengine.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 331 matching lines @@
     if (output_scalings_.find(ssrc) == output_scalings_.end())
       return false;
     *volume = output_scalings_[ssrc];
     return true;
   }
 
   virtual bool GetStats(VoiceMediaInfo* info) { return false; }
 
   virtual void SetRawAudioSink(
       uint32_t ssrc,
-      const rtc::scoped_refptr<webrtc::AudioSinkInterface>& sink) {
-    sink_ = sink;
+      rtc::scoped_ptr<webrtc::AudioSinkInterface> sink) {
+    sink_ = std::move(sink);
   }
 
  private:
   class VoiceChannelAudioSink : public AudioRenderer::Sink {
    public:
     explicit VoiceChannelAudioSink(AudioRenderer* renderer)
         : renderer_(renderer) {
       renderer_->SetSink(this);
     }
     virtual ~VoiceChannelAudioSink() {
@@ skipping 54 matching lines @@
   }
 
   FakeVoiceEngine* engine_;
   std::vector<AudioCodec> recv_codecs_;
   std::vector<AudioCodec> send_codecs_;
   std::map<uint32_t, double> output_scalings_;
   std::vector<DtmfInfo> dtmf_info_queue_;
   int time_since_last_typing_;
   AudioOptions options_;
   std::map<uint32_t, VoiceChannelAudioSink*> local_renderers_;
-  rtc::scoped_refptr<webrtc::AudioSinkInterface> sink_;
+  rtc::scoped_ptr<webrtc::AudioSinkInterface> sink_;
 };
 
 // A helper function to compare the FakeVoiceMediaChannel::DtmfInfo.
 inline bool CompareDtmfInfo(const FakeVoiceMediaChannel::DtmfInfo& info,
                             uint32_t ssrc,
                             int event_code,
                             int duration) {
   return (info.duration == duration && info.event_code == event_code &&
           info.ssrc == ssrc);
 }
@@ skipping 500 matching lines @@
 
  private:
   std::vector<FakeDataMediaChannel*> channels_;
   std::vector<DataCodec> data_codecs_;
   DataChannelType last_channel_type_;
 };
 
 }  // namespace cricket
 
 #endif  // TALK_MEDIA_BASE_FAKEMEDIAENGINE_H_