ba3a1e2c26
Clarify when the RTP header extension can be set depending on the value of the `extmap-allow-mixed` option and on whether the header extension ID is for one-byte or two-bytes extensions. Bug: b/270541827 Change-Id: I4b939f6862d1f19cbfea11518a1cc1507beb2362 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/294920 Reviewed-by: Danil Chapovalov <danilchap@webrtc.org> Commit-Queue: Alessio Bazzica <alessiob@webrtc.org> Cr-Commit-Position: refs/heads/main@{#39399}