Implement audio constraints for PeerConneciton API

content/renderer/media/media_stream_source_extra_data.h

 // 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.
 
 #ifndef CONTENT_RENDERER_MEDIA_MEDIA_STREAM_SOURCE_EXTRA_DATA_H_
 #define CONTENT_RENDERER_MEDIA_MEDIA_STREAM_SOURCE_EXTRA_DATA_H_
 
 #include "base/compiler_specific.h"
 #include "content/common/content_export.h"
 #include "content/common/media/media_stream_options.h"
@@ skipping 15 matching lines @@
 
   // Return device information about the camera or microphone.
   const StreamDeviceInfo& device_info() const {
     return device_info_;
   }
 
   void SetVideoSource(webrtc::VideoSourceInterface* source) {
     video_source_ = source;
   }
 
+  void SetLocalAudioSource(webrtc::AudioSourceInterface* source) {
+    local_audio_source_ = source;
+  }
+
   webrtc::VideoSourceInterface* video_source() { return video_source_; }
   media::AudioCapturerSource* audio_source() { return audio_source_; }
+  webrtc::AudioSourceInterface* local_audio_source() {
+    return local_audio_source_;
+  }
 
  private:
   StreamDeviceInfo device_info_;
   scoped_refptr<webrtc::VideoSourceInterface> video_source_;
   scoped_refptr<media::AudioCapturerSource> audio_source_;
 
+  // This member holds an instance of webrtc::LocalAudioSource. This is used
+  // as a container for audio options.
+  // TODO(hclam): This should be merged with |audio_source_| such that it
+  // carries audio options.
+  scoped_refptr<webrtc::AudioSourceInterface> local_audio_source_;
+
   DISALLOW_COPY_AND_ASSIGN(MediaStreamSourceExtraData);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_MEDIA_STREAM_SOURCE_EXTRA_DATA_H_