MediaStream audio: Refactor 3 separate "glue" implementations into one.

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 b59bf594456eb413ac6ea95329ea45cf9bfc3824..4c7ea7dd4253a113496920a32c9c58d35d98c40d 100644
--- a/content/renderer/media/webrtc/mock_peer_connection_dependency_factory.h
+++ b/content/renderer/media/webrtc/mock_peer_connection_dependency_factory.h
@@ -121,7 +121,6 @@ class MockPeerConnectionDependencyFactory
       bool is_screen_capture) override;
   scoped_refptr<webrtc::VideoTrackSourceInterface> CreateVideoSource(
       cricket::VideoCapturer* capturer) override;
-  void CreateWebAudioSource(blink::WebMediaStreamSource* source) override;
   scoped_refptr<webrtc::MediaStreamInterface> CreateLocalMediaStream(
       const std::string& label) override;
   scoped_refptr<webrtc::VideoTrackInterface> CreateLocalVideoTrack(
@@ -139,15 +138,6 @@ class MockPeerConnectionDependencyFactory
       int sdp_mline_index,
       const std::string& sdp) override;
 
-  scoped_ptr<WebRtcAudioCapturer> CreateAudioCapturer(
-      int render_frame_id,
-      const StreamDeviceInfo& device_info,
-      const blink::WebMediaConstraints& constraints,
-      MediaStreamAudioSource* audio_source) override;
-  void FailToCreateNextAudioCapturer() {
-    fail_to_create_next_audio_capturer_ = true;
-  }
-
   MockAudioSource* last_audio_source() { return last_audio_source_.get(); }
 
  private: