Implements MediaStreamVideoSource.

content/renderer/media/media_stream_dependency_factory.h

Index: content/renderer/media/media_stream_dependency_factory.h
diff --git a/content/renderer/media/media_stream_dependency_factory.h b/content/renderer/media/media_stream_dependency_factory.h
index 5114a41e83fffd2baa64904f44eb17c797474aaf..86b95df8f7964994c4505d761899abd326479463 100644
--- a/content/renderer/media/media_stream_dependency_factory.h
+++ b/content/renderer/media/media_stream_dependency_factory.h
@@ -121,6 +121,16 @@ class CONTENT_EXPORT MediaStreamDependencyFactory
   bool RemoveNativeMediaStreamTrack(const blink::WebMediaStream& stream,
                                     const blink::WebMediaStreamTrack& track);
 
+  // Asks the PeerConnection factory to create an empty WebMediaStreamTrack.
+  blink::WebMediaStreamTrack CreateMediaStreamVideoTrack(
+      const std::string& id);
+
+  // Asks the PeerConnection factory to create a Video Source.
+  scoped_refptr<webrtc::VideoSourceInterface>
+      CreateVideoSource(
+          cricket::VideoCapturer* capturer,
+          const blink::WebMediaConstraints& constraints);
+
   // Asks the libjingle PeerConnection factory to create a libjingle
   // PeerConnection object.
   // The PeerConnection object is owned by PeerConnectionHandler.