Update MediaStreamTrack::Stop to latest draft.

content/renderer/media/mock_media_stream_dependency_factory.h

Index: content/renderer/media/mock_media_stream_dependency_factory.h
diff --git a/content/renderer/media/mock_media_stream_dependency_factory.h b/content/renderer/media/mock_media_stream_dependency_factory.h
index a2cce87c123813f2affa3b39cdf358314a0b4fb4..4bbad2ae18f96f0a2eb1993f62c6421e4be18fe2 100644
--- a/content/renderer/media/mock_media_stream_dependency_factory.h
+++ b/content/renderer/media/mock_media_stream_dependency_factory.h
@@ -106,7 +106,7 @@ class MockAudioSource : public webrtc::AudioSourceInterface {
 
 class MockWebRtcVideoTrack : public webrtc::VideoTrackInterface {
  public:
-  MockWebRtcVideoTrack(std::string id,
+  MockWebRtcVideoTrack(const std::string& id,
                       webrtc::VideoSourceInterface* source);
   virtual void AddRenderer(webrtc::VideoRendererInterface* renderer) OVERRIDE;
   virtual void RemoveRenderer(
@@ -207,7 +207,11 @@ class MockMediaStreamDependencyFactory : public MediaStreamDependencyFactory {
 
   virtual scoped_refptr<WebRtcAudioCapturer> CreateAudioCapturer(
       int render_view_id, const StreamDeviceInfo& device_info,
-      const blink::WebMediaConstraints& constraints) OVERRIDE;
+      const blink::WebMediaConstraints& constraints,
+      MediaStreamAudioSource* audio_source) OVERRIDE;
+  void FailToCreateNextAudioCapturer() {
+    fail_to_create_next_audio_capturer_ = true;
+  }
 
   virtual void StartLocalAudioTrack(
       WebRtcLocalAudioTrack* audio_track) OVERRIDE;
@@ -216,6 +220,7 @@ class MockMediaStreamDependencyFactory : public MediaStreamDependencyFactory {
   MockVideoSource* last_video_source() { return last_video_source_.get(); }
 
  private:
+  bool fail_to_create_next_audio_capturer_;
   scoped_refptr <MockAudioSource> last_audio_source_;
   scoped_refptr <MockVideoSource> last_video_source_;