This CL adds tracing support for input video frame representation which was useful in debugging the linked bug. Bug: b/328533258 Change-Id: I8a9e533b11d99688a71a24138bf8058b841e55d0 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/348841 Commit-Queue: Stefan Holmer <stefan@webrtc.org> Reviewed-by: Stefan Holmer <holmer@google.com> Reviewed-by: Stefan Holmer <stefan@webrtc.org> Cr-Commit-Position: refs/heads/main@{#42155}