The synthetic delay added in ZeroHzAdapterMode::OnFrame does not
account for delay with respect to the initial frame post from
FrameCadenceAdapter::OnFrame. Fix this to account for time spent
in contention on the encode sequence.
Bug: webrtc:15456
Change-Id: I63446e8dfe8f62b09d972434a705e912f8a73d69
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/318420
Commit-Queue: Markus Handell <handellm@webrtc.org>
Reviewed-by: Erik Språng <sprang@webrtc.org>
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#40675}