This will be used by third_party/blink/renderer/platform/peerconnection/webrtc_video_track_source.cc to provide capture_time_identifier_ms_ from
media::VideoFrame.
This identifier would then be passed to webrtc::EncodedFrame and
webrtc::TransformableVideoSenderFrame (in the future CLs) to be used as
an identifier for encoded frames.
Bug: webrtc:14878
Change-Id: I1d8a27891323d86fdc2f014988a8da572df84119
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/291805
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Commit-Queue: Palak Agarwal <agpalak@google.com>
Cr-Commit-Position: refs/heads/main@{#39270}
617d89a385