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* Signaling messages are added to the log with a '+' / '-' sign to expand/collapse the message. This makes the log easier to read and each message can be read separate from the others. * Loopback enabled by default since that's the most common use case. * Wrapped some lines at 80 for easier future diffing. Review URL: http://webrtc-codereview.appspot.com/214001 git-svn-id: http://webrtc.googlecode.com/svn/trunk@711 4adac7df-926f-26a2-2b94-8c16560cd09d