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 cc8cd51f38a6627f0772832d7f99737cb3849dc6..31b6f3eba3d391d1a24f9ccd4b3704d7fe4905fe 100644
--- a/content/renderer/media/media_stream_dependency_factory.h
+++ b/content/renderer/media/media_stream_dependency_factory.h
@@ -119,6 +119,12 @@ class CONTENT_EXPORT MediaStreamDependencyFactory
   bool RemoveNativeMediaStreamTrack(const blink::WebMediaStream& stream,
                                     const blink::WebMediaStreamTrack& track);
 
+  // Asks the PeerConnection factory to create a Video Source.
+  virtual scoped_refptr<webrtc::VideoSourceInterface>
+      CreateVideoSource(
+          cricket::VideoCapturer* capturer,
+          const webrtc::MediaConstraintsInterface* constraints);
+
   // Asks the libjingle PeerConnection factory to create a libjingle
   // PeerConnection object.
   // The PeerConnection object is owned by PeerConnectionHandler.