Fix warnings, simplify ADM.

webrtc/modules/audio_device/win/audio_device_core_win.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 174 matching lines @@
     // Delay information and control
     virtual int32_t SetPlayoutBuffer(const AudioDeviceModule::BufferType type, uint16_t sizeMS);
     virtual int32_t PlayoutBuffer(AudioDeviceModule::BufferType& type, uint16_t& sizeMS) const;
     virtual int32_t PlayoutDelay(uint16_t& delayMS) const;
     virtual int32_t RecordingDelay(uint16_t& delayMS) const;
 
     // CPU load
     virtual int32_t CPULoad(uint16_t& load) const;
 
     virtual int32_t EnableBuiltInAEC(bool enable);
-    virtual bool BuiltInAECIsEnabled() const;
 
 public:
     virtual bool PlayoutWarning() const;
     virtual bool PlayoutError() const;
     virtual bool RecordingWarning() const;
     virtual bool RecordingError() const;
     virtual void ClearPlayoutWarning();
     virtual void ClearPlayoutError();
     virtual void ClearRecordingWarning();
     virtual void ClearRecordingError();
@@ skipping 164 matching lines @@
     uint16_t                          _newMicLevel;
 
     mutable char                            _str[512];
 };
 
 #endif    // #if (_MSC_VER >= 1400)
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_AUDIO_DEVICE_AUDIO_DEVICE_CORE_WIN_H_