Mark MediaStreamTrackMetrics DISALLOW_COPY_AND_ASSIGN

content/renderer/media/webrtc/media_stream_track_metrics.h

Index: content/renderer/media/webrtc/media_stream_track_metrics.h
diff --git a/content/renderer/media/webrtc/media_stream_track_metrics.h b/content/renderer/media/webrtc/media_stream_track_metrics.h
index 4a4a6d3b98fdc8ebc8b7379572685e9b318d0944..18287f399de542f839e067575f7ce975e7baeed6 100644
--- a/content/renderer/media/webrtc/media_stream_track_metrics.h
+++ b/content/renderer/media/webrtc/media_stream_track_metrics.h
@@ -97,6 +97,8 @@ class CONTENT_EXPORT MediaStreamTrackMetrics : public base::NonThreadSafe {
   ObserverVector observers_;
 
   webrtc::PeerConnectionInterface::IceConnectionState ice_state_;
+
+  DISALLOW_COPY_AND_ASSIGN(MediaStreamTrackMetrics);
 };
 
 }  // namespace