696cea0843
This prepares for ability to defer sequence number assignment to after the pacing stage - a scenario where the RtpRtcp module rather than than RTPSender class has responsibility for sequence numbering. Bug: webrtc:11340 Change-Id: Ife88f60258b9b7cfd9dbd3326f02ac34da8f7603 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/214967 Reviewed-by: Åsa Persson <asapersson@webrtc.org> Commit-Queue: Erik Språng <sprang@webrtc.org> Cr-Commit-Position: refs/heads/master@{#33702}