Pull the Voice Activity Detector out from the AGC

webrtc/modules/audio_processing/vad/pole_zero_filter.h

Index: webrtc/modules/audio_processing/vad/pole_zero_filter.h
diff --git a/webrtc/modules/audio_processing/agc/pole_zero_filter.h b/webrtc/modules/audio_processing/vad/pole_zero_filter.h
similarity index 87%
rename from webrtc/modules/audio_processing/agc/pole_zero_filter.h
rename to webrtc/modules/audio_processing/vad/pole_zero_filter.h
index c9d96fdd42154aa640eca0fc9c4c09f0c220f91d..038d801a1b6bfe9d386b4e9bcc57cff120e202aa 100644
--- a/webrtc/modules/audio_processing/agc/pole_zero_filter.h
+++ b/webrtc/modules/audio_processing/vad/pole_zero_filter.h
@@ -8,8 +8,8 @@
  *  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"
 
@@ -47,4 +47,4 @@ class PoleZeroFilter {
 
 }  // namespace webrtc
 
-#endif  // WEBRTC_MODULES_AUDIO_PROCESSING_AGC_POLE_ZERO_FILTER_H_
+#endif  // WEBRTC_MODULES_AUDIO_PROCESSING_VAD_POLE_ZERO_FILTER_H_