Remove usage of VoEVolumeControl from WVoE and Audio[Send|Receive]Stream.

webrtc/voice_engine/channel.h

Index: webrtc/voice_engine/channel.h
diff --git a/webrtc/voice_engine/channel.h b/webrtc/voice_engine/channel.h
index e4e819c76f8c7f24f0a7a01904895d1827ddd381..0426adfea293b2141ea899ae67652d8046e1395f 100644
--- a/webrtc/voice_engine/channel.h
+++ b/webrtc/voice_engine/channel.h
@@ -71,7 +71,6 @@ class RtcpRttStatsProxy;
 class RtpPacketSenderProxy;
 class Statistics;
 class TransportFeedbackProxy;
-class TransmitMixer;
 class TransportSequenceNumberProxy;
 class VoERtcpObserver;
 
@@ -155,7 +154,6 @@ class Channel
   int32_t Init();
   int32_t SetEngineInformation(Statistics& engineStatistics,
                                OutputMixer& outputMixer,
-                               TransmitMixer& transmitMixer,
                                ProcessThread& moduleProcessThread,
                                AudioDeviceModule& audioDeviceModule,
                                VoiceEngineObserver* voiceEngineObserver,
@@ -478,7 +476,6 @@ class Channel
   // uses
   Statistics* _engineStatisticsPtr;
   OutputMixer* _outputMixerPtr;
-  TransmitMixer* _transmitMixerPtr;
   ProcessThread* _moduleProcessThreadPtr;
   AudioDeviceModule* _audioDeviceModulePtr;
   VoiceEngineObserver* _voiceEngineObserverPtr;  // owned by base