RemovePlayoutSink  507 content/renderer/media/media_stream_audio_processor.cc     playout_data_source_->RemovePlayoutSink(this);
RemovePlayoutSink  259 content/renderer/media/webrtc_audio_device_impl.h   virtual void RemovePlayoutSink(Sink* sink) = 0;
RemovePlayoutSink  399 content/renderer/media/webrtc_audio_device_impl.h   virtual void RemovePlayoutSink(WebRtcPlayoutDataSource::Sink* sink) OVERRIDE;