Add detection for repeated audio in capturing.

content/content_renderer.gypi

 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 {
   'dependencies': [
     '../base/base.gyp:base',
     '../base/third_party/dynamic_annotations/dynamic_annotations.gyp:dynamic_annotations',
     '../cc/cc.gyp:cc',
     '../cc/blink/cc_blink.gyp:cc_blink',
@@ skipping 618 matching lines @@
       'renderer/media/media_stream_video_source.cc',
       'renderer/media/media_stream_video_source.h',
       'renderer/media/media_stream_video_track.cc',
       'renderer/media/media_stream_video_track.h',
       'renderer/media/peer_connection_identity_store.cc',
       'renderer/media/peer_connection_identity_store.h',
       'renderer/media/peer_connection_tracker.cc',
       'renderer/media/peer_connection_tracker.h',
       'renderer/media/remote_media_stream_impl.cc',
       'renderer/media/remote_media_stream_impl.h',
+      'renderer/media/audio_repetition_detector.cc',
+      'renderer/media/audio_repetition_detector.h',
       'renderer/media/rtc_data_channel_handler.cc',
       'renderer/media/rtc_data_channel_handler.h',
       'renderer/media/rtc_dtmf_sender_handler.cc',
       'renderer/media/rtc_dtmf_sender_handler.h',
       'renderer/media/rtc_media_constraints.cc',
       'renderer/media/rtc_media_constraints.h',
       'renderer/media/rtc_peer_connection_handler.cc',
       'renderer/media/rtc_peer_connection_handler.h',
       'renderer/media/rtc_video_decoder.cc',
       'renderer/media/rtc_video_decoder.h',
@@ skipping 247 matching lines @@
     }],
   ],
   'target_conditions': [
     ['OS=="android"', {
       'sources/': [
         ['include', '^renderer/render_view_linux\\.cc$'],
       ],
     }],
   ],
 }