Remove usage of VoEBase::AssociateSendChannel() from WVoMC.

webrtc/voice_engine/channel_proxy.h

Index: webrtc/voice_engine/channel_proxy.h
diff --git a/webrtc/voice_engine/channel_proxy.h b/webrtc/voice_engine/channel_proxy.h
index 44b25fd06779e14bf25aa22a10b8794b80f92b95..182e2524b56ffa535ccee1419ab6a67358a1f7a3 100644
--- a/webrtc/voice_engine/channel_proxy.h
+++ b/webrtc/voice_engine/channel_proxy.h
@@ -91,10 +91,10 @@ class ChannelProxy {
   virtual AudioMixer::Source::AudioFrameInfo GetAudioFrameWithInfo(
       int sample_rate_hz,
       AudioFrame* audio_frame);
-
   virtual int NeededFrequency() const;
-
   virtual void SetTransportOverhead(int transport_overhead_per_packet);
+  virtual void AssociateSendChannel(const ChannelProxy& send_channel_proxy);
+  virtual void DisassociateSendChannel();
 
  private:
   Channel* channel() const;