Philipp Hancke 80a8683e30 sdp: tweak msid signaling further
* changing the defaults to unified-plan,
* expect unified-plan by default
* only include the msid-semantic line in answers when the
offer contained a sign of msid being used

BUG=webrtc:10421

Change-Id: I79364c2dd801d37adea119375e4dc01edf55b3be
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/331800
Reviewed-by: Henrik Boström <hbos@webrtc.org>
Commit-Queue: Philipp Hancke <phancke@microsoft.com>
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#41480}
2024-01-08 14:03:19 +00:00
..