Pull the Voice Activity Detector out from the AGC

webrtc/modules/audio_processing/vad/pole_zero_filter.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.
  */
 
-#ifndef WEBRTC_MODULES_AUDIO_PROCESSING_AGC_POLE_ZERO_FILTER_H_
-#define WEBRTC_MODULES_AUDIO_PROCESSING_AGC_POLE_ZERO_FILTER_H_
+#ifndef WEBRTC_MODULES_AUDIO_PROCESSING_VAD_POLE_ZERO_FILTER_H_
+#define WEBRTC_MODULES_AUDIO_PROCESSING_VAD_POLE_ZERO_FILTER_H_
 
 #include "webrtc/typedefs.h"
 
 namespace webrtc {
 
 class PoleZeroFilter {
  public:
   ~PoleZeroFilter() {}
 
   static PoleZeroFilter* Create(const float* numerator_coefficients,
@@ skipping 17 matching lines @@
   float numerator_coefficients_[kMaxFilterOrder + 1];
   float denominator_coefficients_[kMaxFilterOrder + 1];
 
   int order_numerator_;
   int order_denominator_;
   int highest_order_;
 };
 
 }  // namespace webrtc
 
-#endif  // WEBRTC_MODULES_AUDIO_PROCESSING_AGC_POLE_ZERO_FILTER_H_
+#endif  // WEBRTC_MODULES_AUDIO_PROCESSING_VAD_POLE_ZERO_FILTER_H_