Refactor the AudioDevice for iOS and improve the performance and stability

webrtc/modules/audio_device/mock_audio_device_buffer.h

Index: webrtc/modules/audio_device/mock_audio_device_buffer.h
diff --git a/webrtc/modules/audio_device/mock_audio_device_buffer.h b/webrtc/modules/audio_device/mock_audio_device_buffer.h
index d18c0ec5b717b2a17b059a220e1980af5fd68a6b..07c9e2912e15e4bbaf4c50b8e45a51d10e48cba3 100644
--- a/webrtc/modules/audio_device/mock_audio_device_buffer.h
+++ b/webrtc/modules/audio_device/mock_audio_device_buffer.h
@@ -20,9 +20,13 @@ class MockAudioDeviceBuffer : public AudioDeviceBuffer {
  public:
   MockAudioDeviceBuffer() {}
   virtual ~MockAudioDeviceBuffer() {}
-
   MOCK_METHOD1(RequestPlayoutData, int32_t(size_t nSamples));
   MOCK_METHOD1(GetPlayoutData, int32_t(void* audioBuffer));
+  MOCK_METHOD2(SetRecordedBuffer,
+               int32_t(const void* audioBuffer, size_t nSamples));
+  MOCK_METHOD3(SetVQEData,
+               void(int playDelayMS, int recDelayMS, int clockDrift));
+  MOCK_METHOD0(DeliverRecordedData, int32_t());
 };
 
 }  // namespace webrtc