bemasc@google.com 603ae3ece2 Make RtpHeaderExtensionMap::Register and ::Deregister idempotent.
This CL changes the return code of these methods to indicate
success instead of failure when there is nothing to change.

This change appears to resolve an issue where enabling the
timestamp offset extension via SDP would result in a failure if
that extension had already been enabled.
Review URL: https://webrtc-codereview.appspot.com/1118008

git-svn-id: http://webrtc.googlecode.com/svn/trunk@3588 4adac7df-926f-26a2-2b94-8c16560cd09d
2013-03-01 17:03:02 +00:00
2013-02-11 17:43:19 +00:00
2013-02-14 19:13:30 +00:00
2013-02-11 17:43:19 +00:00
2013-02-19 18:31:20 +00:00
2012-10-22 18:19:23 +00:00
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