
The purpose of the proxy is that all calls to MediaStreamTracks should be done on the signaling thread. BUG= TEST= Review URL: http://webrtc-codereview.appspot.com/225004 git-svn-id: http://webrtc.googlecode.com/svn/trunk@755 4adac7df-926f-26a2-2b94-8c16560cd09d