This is used to avoid thread processing in simulated time controller. This saves up to 30% execution time in debug builds. Bug: webrtc:10365 Change-Id: Ie83dfb2468d371e4687d28c776acf7e23eb411d1 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/133173 Reviewed-by: Stefan Holmer <stefan@webrtc.org> Reviewed-by: Niels Moller <nisse@webrtc.org> Commit-Queue: Sebastian Jansson <srte@webrtc.org> Cr-Commit-Position: refs/heads/master@{#27666}