This is a reland of ece3c228a2cbd1c1b05eee3a7f55dbb6f020acbc
Original change's description:
> Encode RTC event logs in new format.
>
> This CL adds the encoder and wires it up to the event log.
> Parser and unit tests are uploaded in a separate CL.
>
> Bug: webrtc:8111
> Change-Id: I6470003e55c2c4006cd8349a2c4bdc3f9491d869
> Reviewed-on: https://webrtc-review.googlesource.com/c/106708
> Commit-Queue: Björn Terelius <terelius@webrtc.org>
> Reviewed-by: Elad Alon <eladalon@webrtc.org>
> Cr-Commit-Position: refs/heads/master@{#25333}
Bug: webrtc:8111
Change-Id: I22eeca36d6b1f7cfa1ac65347571ebe33cecc1fc
Reviewed-on: https://webrtc-review.googlesource.com/c/108082
Reviewed-by: Elad Alon <eladalon@webrtc.org>
Commit-Queue: Björn Terelius <terelius@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#25382}
c35096d975