Steve Anton 6d6a2ae174 Refactor PeerConnection::UpdateSessionState
This rewrites UpdateSessionState to better show the logic common
to all description types and the logic specific to
offers/answers/etc. Separating these will allow more code to be
reused with the Unified Plan implementation.

Bug: webrtc:8587
Change-Id: I56e0370dcb8bb4b59af2a5209edcad4606480e1c
Reviewed-on: https://webrtc-review.googlesource.com/27322
Commit-Queue: Steve Anton <steveanton@webrtc.org>
Reviewed-by: Peter Thatcher <pthatcher@webrtc.org>
Reviewed-by: Zhi Huang <zhihuang@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#21065}
2017-12-05 02:11:51 +00:00
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