Remove posting of ICE messages from WebRTCSession in PeerConnection to signaling thread.
These callbacks are called from signal thread already. There is no point
in posting messages on the same thread again.

BUG=2922
R=fischman@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/9219004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@5626 4adac7df-926f-26a2-2b94-8c16560cd09d
4 files changed