
constructor. This is needed as BaseSession tests can query the transport channel without creating dtlstransportchannel ( as they are unaware of the underlying implementation). This will also fix the memcheck error in webrtc bots. R=wu@webrtc.org Review URL: https://webrtc-codereview.appspot.com/2110004 git-svn-id: http://webrtc.googlecode.com/svn/trunk@4615 4adac7df-926f-26a2-2b94-8c16560cd09d