Switch LiveAudio to source provider solution.

content/renderer/media/media_stream_impl.cc

 // 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.
 
 #include "content/renderer/media/media_stream_impl.h"
 
 #include <utility>
 
 #include "base/logging.h"
 #include "base/strings/string_number_conversions.h"
@@ skipping 702 matching lines @@
   return true;
 }
 
 MediaStreamSourceExtraData::MediaStreamSourceExtraData(
     const StreamDeviceInfo& device_info,
     const WebKit::WebMediaStreamSource& webkit_source)
     : device_info_(device_info),
       webkit_source_(webkit_source) {
 }
 
-MediaStreamSourceExtraData::MediaStreamSourceExtraData(
-    media::AudioCapturerSource* source)
-    : audio_source_(source)  {
+MediaStreamSourceExtraData::MediaStreamSourceExtraData() {
 }
 
 MediaStreamSourceExtraData::~MediaStreamSourceExtraData() {}
 
 MediaStreamExtraData::MediaStreamExtraData(
     webrtc::MediaStreamInterface* stream, bool is_local)
     : stream_(stream),
       is_local_(is_local) {
 }
 
@@ skipping 35 matching lines @@
   }
 
   for (size_t i = 0; i < video_sources.size(); ++i) {
     video_sources[i].setReadyState(
             WebKit::WebMediaStreamSource::ReadyStateEnded);
     video_sources[i].setExtraData(NULL);
   }
 }
 
 }  // namespace content