Removes unused APIs from the ADM (part II)

webrtc/modules/audio_device/mac/audio_mixer_manager_mac.h

Index: webrtc/modules/audio_device/mac/audio_mixer_manager_mac.h
diff --git a/webrtc/modules/audio_device/mac/audio_mixer_manager_mac.h b/webrtc/modules/audio_device/mac/audio_mixer_manager_mac.h
index b74fe660ee3091a23d21a8f2ad6594b2712f3248..74d17ba30f2d52be8bb814388e671fb4fc93f58b 100644
--- a/webrtc/modules/audio_device/mac/audio_mixer_manager_mac.h
+++ b/webrtc/modules/audio_device/mac/audio_mixer_manager_mac.h
@@ -28,7 +28,6 @@ class AudioMixerManagerMac {
   int32_t SpeakerVolume(uint32_t& volume) const;
   int32_t MaxSpeakerVolume(uint32_t& maxVolume) const;
   int32_t MinSpeakerVolume(uint32_t& minVolume) const;
-  int32_t SpeakerVolumeStepSize(uint16_t& stepSize) const;
   int32_t SpeakerVolumeIsAvailable(bool& available);
   int32_t SpeakerMuteIsAvailable(bool& available);
   int32_t SetSpeakerMute(bool enable);
@@ -38,15 +37,11 @@ class AudioMixerManagerMac {
   int32_t MicrophoneMuteIsAvailable(bool& available);
   int32_t SetMicrophoneMute(bool enable);
   int32_t MicrophoneMute(bool& enabled) const;
-  int32_t MicrophoneBoostIsAvailable(bool& available);
-  int32_t SetMicrophoneBoost(bool enable);
-  int32_t MicrophoneBoost(bool& enabled) const;
   int32_t MicrophoneVolumeIsAvailable(bool& available);
   int32_t SetMicrophoneVolume(uint32_t volume);
   int32_t MicrophoneVolume(uint32_t& volume) const;
   int32_t MaxMicrophoneVolume(uint32_t& maxVolume) const;
   int32_t MinMicrophoneVolume(uint32_t& minVolume) const;
-  int32_t MicrophoneVolumeStepSize(uint16_t& stepSize) const;
   int32_t Close();
   int32_t CloseSpeaker();
   int32_t CloseMicrophone();