89ca299161
With this cl, a packet is only parsed once in RtpTransport::DemuxPacket and the metadata is reused. Extensions are still identified twice- one for demuxing based on mid. The second time in Channel::OnReceivedPacket in order to use extensions specific to that mid. Bug: webrtc:7135, webrtc:14795 Change-Id: I50e3814af92ca4378f148876b20a54bcfac1e146 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/290540 Reviewed-by: Danil Chapovalov <danilchap@webrtc.org> Commit-Queue: Per Kjellander <perkj@webrtc.org> Cr-Commit-Position: refs/heads/main@{#39058}