Disable GetStatsForInvalidTrack while I rewrite it.

TBR=xians@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/17969005

git-svn-id: http://webrtc.googlecode.com/svn/trunk/talk@6748 4adac7df-926f-26a2-2b94-8c16560cd09d
1 file changed