f99c2f2dbc
Also fixing enabling/disabling of NACK. Previous implementation was made under the assumption that NACK should always be enabled which caused both missing NACK settings in SDP as well as broken interop between old and new WebRtcVideoEngines. BUG=1788 R=pthatcher@webrtc.org Review URL: https://webrtc-codereview.appspot.com/16689004 git-svn-id: http://webrtc.googlecode.com/svn/trunk@6431 4adac7df-926f-26a2-2b94-8c16560cd09d