Upstream commit: https://webrtc.googlesource.com/src/+/0fa90887c5bf15aa6e73c2df78cae31feb82fa54 Deprecate VideoFrame::timestamp() and set_timestamp Instead, add rtp_timestamp and set_rtp_timestamp. Bug: webrtc:13756 Change-Id: Ic4266394003e0d49e525d71f4d830f5e518299cc Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/342781 Commit-Queue: Per Kjellander <perkj@webrtc.org> Reviewed-by: Magnus Jedvert <magjed@webrtc.org> Reviewed-by: Erik Språng <sprang@webrtc.org> Reviewed-by: Markus Handell <handellm@webrtc.org> Cr-Commit-Position: refs/heads/main@{#41894}