Revert of MediaStream audio object graph untangling and clean-ups.

content/renderer/media/webrtc/mock_peer_connection_dependency_factory.cc

 // Copyright 2014 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/webrtc/mock_peer_connection_dependency_factory.h"
 
 #include <stddef.h>
 
 #include "base/logging.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 352 matching lines @@
 scoped_refptr<webrtc::VideoTrackSourceInterface>
 MockPeerConnectionDependencyFactory::CreateVideoSource(
     cricket::VideoCapturer* capturer,
     const blink::WebMediaConstraints& constraints) {
   // Video source normally take ownership of |capturer|.
   delete capturer;
   NOTIMPLEMENTED();
   return nullptr;
 }
 
-void MockPeerConnectionDependencyFactory::CreateWebAudioSource(
-    blink::WebMediaStreamSource* source) {}
+scoped_refptr<WebAudioCapturerSource>
+MockPeerConnectionDependencyFactory::CreateWebAudioSource(
+    blink::WebMediaStreamSource* source) {
+  return NULL;
+}
 
 scoped_refptr<webrtc::MediaStreamInterface>
 MockPeerConnectionDependencyFactory::CreateLocalMediaStream(
     const std::string& label) {
   return new rtc::RefCountedObject<MockMediaStream>(label);
 }
 
 scoped_refptr<webrtc::VideoTrackInterface>
 MockPeerConnectionDependencyFactory::CreateLocalVideoTrack(
     const std::string& id,
@@ skipping 20 matching lines @@
 }
 
 webrtc::IceCandidateInterface*
 MockPeerConnectionDependencyFactory::CreateIceCandidate(
     const std::string& sdp_mid,
     int sdp_mline_index,
     const std::string& sdp) {
   return new MockIceCandidate(sdp_mid, sdp_mline_index, sdp);
 }
 
-scoped_ptr<WebRtcAudioCapturer>
+scoped_refptr<WebRtcAudioCapturer>
 MockPeerConnectionDependencyFactory::CreateAudioCapturer(
     int render_frame_id,
     const StreamDeviceInfo& device_info,
     const blink::WebMediaConstraints& constraints,
     MediaStreamAudioSource* audio_source) {
   if (fail_to_create_next_audio_capturer_) {
     fail_to_create_next_audio_capturer_ = false;
     return NULL;
   }
   DCHECK(audio_source);
   return WebRtcAudioCapturer::CreateCapturer(-1, device_info, constraints, NULL,
                                              audio_source);
 }
 
+void MockPeerConnectionDependencyFactory::StartLocalAudioTrack(
+      WebRtcLocalAudioTrack* audio_track) {
+  audio_track->Start();
+}
+
 }  // namespace content