Remove usage of VoEAudioProcessing from WVoE/MC.

webrtc/voice_engine/include/voe_base.h

Index: webrtc/voice_engine/include/voe_base.h
diff --git a/webrtc/voice_engine/include/voe_base.h b/webrtc/voice_engine/include/voe_base.h
index 95a3fd77b1fcd1e2fbf1d01e7b9acbbe51802f64..b8732129dfa36aa981b85ac703441fd2a95288d2 100644
--- a/webrtc/voice_engine/include/voe_base.h
+++ b/webrtc/voice_engine/include/voe_base.h
@@ -44,6 +44,9 @@ namespace webrtc {
 class AudioDeviceModule;
 class AudioProcessing;
 class AudioTransport;
+namespace voe {
+class TransmitMixer;
+}  // namespace voe
 
 // VoiceEngineObserver
 class WEBRTC_DLLEXPORT VoiceEngineObserver {
@@ -143,6 +146,10 @@ class WEBRTC_DLLEXPORT VoEBase {
   // Returns NULL before Init() is called.
   virtual AudioDeviceModule* audio_device_module() = 0;
 
+  // This method is WIP - DO NOT USE!
+  // Returns NULL before Init() is called.
+  virtual voe::TransmitMixer* transmit_mixer() = 0;
+
   // Terminates all VoiceEngine functions and releases allocated resources.
   // Returns 0.
   virtual int Terminate() = 0;