Removes unused WaveOut APIs from ADM

webrtc/modules/audio_device/ios/audio_device_ios.h

 /*
  *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 98 matching lines @@
                             char guid[kAdmMaxGuidSize]) override;
   int32_t RecordingDeviceName(uint16_t index,
                               char name[kAdmMaxDeviceNameSize],
                               char guid[kAdmMaxGuidSize]) override;
   int32_t SetPlayoutDevice(uint16_t index) override;
   int32_t SetPlayoutDevice(
       AudioDeviceModule::WindowsDeviceType device) override;
   int32_t SetRecordingDevice(uint16_t index) override;
   int32_t SetRecordingDevice(
       AudioDeviceModule::WindowsDeviceType device) override;
-  int32_t SetWaveOutVolume(uint16_t volumeLeft, uint16_t volumeRight) override;
-  int32_t WaveOutVolume(uint16_t& volumeLeft,
-                        uint16_t& volumeRight) const override;
   int32_t InitSpeaker() override;
   bool SpeakerIsInitialized() const override;
   int32_t InitMicrophone() override;
   bool MicrophoneIsInitialized() const override;
   int32_t SpeakerVolumeIsAvailable(bool& available) override;
   int32_t SetSpeakerVolume(uint32_t volume) override;
   int32_t SpeakerVolume(uint32_t& volume) const override;
   int32_t MaxSpeakerVolume(uint32_t& maxVolume) const override;
   int32_t MinSpeakerVolume(uint32_t& minVolume) const override;
   int32_t SpeakerVolumeStepSize(uint16_t& stepSize) const override;
@@ skipping 180 matching lines @@
   // Contains the time for when the last output volume change was detected.
   int64_t last_output_volume_change_time_ ACCESS_ON(thread_checker_);
 
   // Exposes private members for testing purposes only.
   FRIEND_TEST_ALL_PREFIXES(AudioDeviceTest, testInterruptedAudioSession);
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_AUDIO_DEVICE_IOS_AUDIO_DEVICE_IOS_H_