This means sender frames cloned from received frames have a valid
header from the start, rather than callers needing to later call
SetMetadata.
Bug: webrtc:14708
Change-Id: Ie25fbd6609928a9555b6db688ab451ff61fa7147
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/293041
Reviewed-by: Stefan Holmer <stefan@webrtc.org>
Commit-Queue: Tony Herre <herre@google.com>
Reviewed-by: Tove Petersson <tovep@google.com>
Cr-Commit-Position: refs/heads/main@{#39317}
daf29e461e