Fix broken audio.

The problem was introduced in 3712, no need to external transport in
real test app, revert the change.

TBR=pwestin@webrtc.org
BUG=1539
Review URL: https://webrtc-codereview.appspot.com/1266005

git-svn-id: http://webrtc.googlecode.com/svn/trunk/webrtc@3735 4adac7df-926f-26a2-2b94-8c16560cd09d
1 file changed