MediaStream audio object graph untangling and clean-ups.

content/renderer/media/webrtc/mock_peer_connection_dependency_factory.h

Index: content/renderer/media/webrtc/mock_peer_connection_dependency_factory.h
diff --git a/content/renderer/media/webrtc/mock_peer_connection_dependency_factory.h b/content/renderer/media/webrtc/mock_peer_connection_dependency_factory.h
index 60dec668d8e4967716ffb43220715a5404c3b60a..1e28f5dc0d425173b9d8970c4588a416eb25b393 100644
--- a/content/renderer/media/webrtc/mock_peer_connection_dependency_factory.h
+++ b/content/renderer/media/webrtc/mock_peer_connection_dependency_factory.h
@@ -189,7 +189,7 @@ class MockPeerConnectionDependencyFactory
   scoped_refptr<webrtc::VideoSourceInterface> CreateVideoSource(
       cricket::VideoCapturer* capturer,
       const blink::WebMediaConstraints& constraints) override;
-  scoped_refptr<WebAudioCapturerSource> CreateWebAudioSource(
+  scoped_ptr<WebAudioCapturerSource> CreateWebAudioSource(
       blink::WebMediaStreamSource* source) override;
   scoped_refptr<webrtc::MediaStreamInterface> CreateLocalMediaStream(
       const std::string& label) override;
@@ -208,7 +208,7 @@ class MockPeerConnectionDependencyFactory
       int sdp_mline_index,
       const std::string& sdp) override;
 
-  scoped_refptr<WebRtcAudioCapturer> CreateAudioCapturer(
+  scoped_ptr<WebRtcAudioCapturer> CreateAudioCapturer(
       int render_frame_id,
       const StreamDeviceInfo& device_info,
       const blink::WebMediaConstraints& constraints,
@@ -217,8 +217,6 @@ class MockPeerConnectionDependencyFactory
     fail_to_create_next_audio_capturer_ = true;
   }
 
-  void StartLocalAudioTrack(WebRtcLocalAudioTrack* audio_track) override;
-
   MockAudioSource* last_audio_source() { return last_audio_source_.get(); }
   MockVideoSource* last_video_source() { return last_video_source_.get(); }