Wip - cl for implemening VideoTrackSource::ApplyConstraints(constraints, VideoTrack) and adopt safe…

content/renderer/media/media_stream_source.h

Index: content/renderer/media/media_stream_source.h
diff --git a/content/renderer/media/media_stream_source.h b/content/renderer/media/media_stream_source.h
index 23b896ae88efaa9e5e8a190dcbb405e33c72b48b..b9bd9f095f59ca4b2822522297d5dd78e7d8b69d 100644
--- a/content/renderer/media/media_stream_source.h
+++ b/content/renderer/media/media_stream_source.h
@@ -60,6 +60,12 @@ class CONTENT_EXPORT MediaStreamSource
   // in the future.
   void ResetSourceStoppedCallback();
 
+  // Connects this source to the given |track|, creating the appropriate
+  // implementation of the content::MediaStreamTrack interface, which
+  // becomes associated with and owned by |track|. Returns true if the source
+  // was successfully started.
+  virtual bool ConnectToTrack(const blink::WebMediaStreamTrack& track) = 0; // { return false; }
+
  protected:
   // Called when StopSource is called. It allows derived classes to implement
   // its own Stop method.