jiayl@webrtc.org
52055a276d
Fixes two issues in how we handle OfferToReceiveX for CreateOffer:
1. the options set in the first CreateOffer call should not affect the result of a second CreateOffer call, if SetLocalDescription is not called after the first CreateOffer. So the member var options_ of MediaStreamSignaling is removed to make each CreateOffer independent. Instead, MediaSession is responsible to make sure that an m-line in the current local description is never removed from the newly created offer. 2. OfferToReceiveAudio used to default to true, i.e. always having m=audio line even if no audio track. This is changed so that by default m=audio is only added if there are any audio tracks. BUG=2108 R=pthatcher@webrtc.org Review URL: https://webrtc-codereview.appspot.com/16309004 git-svn-id: http://webrtc.googlecode.com/svn/trunk@7068 4adac7df-926f-26a2-2b94-8c16560cd09d
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