RESOURCE_UTILIZATION in VideoFrameMetadata, a consumer feedback signal.

media/cast/sender/video_sender.h

Index: media/cast/sender/video_sender.h
diff --git a/media/cast/sender/video_sender.h b/media/cast/sender/video_sender.h
index f9b49e23322b1b107e47b466eaf7d5e8bf95373c..2bf4d82a81983e32175ddc095a88daed16aed707 100644
--- a/media/cast/sender/video_sender.h
+++ b/media/cast/sender/video_sender.h
@@ -67,7 +67,8 @@ class VideoSender : public FrameSender,
 
  private:
   // Called by the |video_encoder_| with the next EncodedFrame to send.
-  void OnEncodedVideoFrame(int encoder_bitrate,
+  void OnEncodedVideoFrame(const scoped_refptr<media::VideoFrame>& video_frame,
+                           int encoder_bitrate,
                            scoped_ptr<SenderEncodedFrame> encoded_frame);
 
   // Encodes media::VideoFrame images into EncodedFrames.  Per configuration,