Chrome MediaStream VideoTrack implementation.

content/renderer/media/media_stream_impl.h

Index: content/renderer/media/media_stream_impl.h
diff --git a/content/renderer/media/media_stream_impl.h b/content/renderer/media/media_stream_impl.h
index ef0de16ae06b14ea2ed0fb061c2ad3089d7e2669..95ae32d3747d55210152bc5e4dcb990004e4fad8 100644
--- a/content/renderer/media/media_stream_impl.h
+++ b/content/renderer/media/media_stream_impl.h
@@ -146,8 +146,13 @@ class CONTENT_EXPORT MediaStreamImpl
     blink::WebMediaStream web_stream;
     blink::WebUserMediaRequest request;
 
-    void StartTrack(const blink::WebMediaStreamTrack& track,
-                    const blink::WebMediaConstraints& constraints);
+    void StartAudioTrack(const blink::WebMediaStreamTrack& track,
+                         const blink::WebMediaConstraints& constraints);
+
+    blink::WebMediaStreamTrack CreateAndStartVideoTrack(
+        const blink::WebMediaStreamSource& source,
+        const blink::WebMediaConstraints& constraints,
+        MediaStreamDependencyFactory* factory);
 
     // Triggers |callback| when all sources used in this request have either
     // successfully started, or a source has failed to start.