Move SDP m= line matching from BaseChannel to WebRtcSession
This is part of the work towards implementing Unified Plan.
The logic for correlating m= lines to channels is changing in
Unified Plan. Moving this logic to WebRtcSession means that we do
not need to add a flag to BaseChannel to indicate which logic it
should use (i.e., Plan B vs. Unified Plan) and can keep those
details in WebRtcSession.
Bug: webrtc:8183
Change-Id: I729da73ece01fd20f45e82f8956a02c4cad2469e
Reviewed-on: https://chromium-review.googlesource.com/653490
Reviewed-by: Taylor Brandstetter <deadbeef@webrtc.org>
Reviewed-by: Peter Thatcher <pthatcher@webrtc.org>
Commit-Queue: Steve Anton <steveanton@webrtc.org>
Cr-Original-Commit-Position: refs/heads/master@{#19786}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: 18ee1d55b4cdd7faef75464e39ec06568790adbc5 files changed
