Lots of code call rtc::Thread directly instead of through TaskQueueBase
interface, thus to continue migration step by step rtc::Thread needs
to implement both old and new TaskQueueBase interfaces.
Bug: webrtc:14245
Change-Id: Ie7cac897a4c8a6227b8d467a39adb30aec6f1318
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/267984
Reviewed-by: Tomas Gunnarsson <tommi@webrtc.org>
Commit-Queue: Danil Chapovalov <danilchap@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#37474}
4bcf809df7