03505bcb7a
This is required since the session pointer is currently used on multiple threads but there's no synchronization code to guard it. I'm removing the set_session() method and session() getter since they would cause problems if used without synchronization. This is a reland of an already reviewed cl that got reverted by mistake. TBR=xians@google.com Review URL: https://webrtc-codereview.appspot.com/13959004 git-svn-id: http://webrtc.googlecode.com/svn/trunk@6677 4adac7df-926f-26a2-2b94-8c16560cd09d