This will clone an encoded video frame into a sender frame, preserving metadata as much as possible. Bug: webrtc:14708 Change-Id: I6f68d2ee65ef85c32cc3c142a41346b81ba73533 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/284701 Commit-Queue: Harald Alvestrand <hta@webrtc.org> Reviewed-by: Guido Urdaneta <guidou@webrtc.org> Reviewed-by: Henrik Boström <hbos@webrtc.org> Cr-Commit-Position: refs/heads/main@{#38733}