Measures the time consumed by OnFrame (e.g. the encoding time) and
sets an overload flag during N subsequent frames if the time is
longer than the current frame time. N is set to the number of
received frames on the network thread while being blocked by
encoding.
The queue overload mechanism for zero hertz can be disabled using the
WebRTC-ZeroHertzQueueOverload kill switch.
Also adds a UMA called WebRTC.Screenshare.ZeroHz.QueueOverload.
Bug: webrtc:15539
Change-Id: If81481c265d3e845485f79a2a1ac03dcbcc3ffc3
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/332381
Commit-Queue: Henrik Andreassson <henrika@webrtc.org>
Reviewed-by: Markus Handell <handellm@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#41489}