This remove use of MaybeWorkerThread from TaskQueuePacedSender. Instead, the TaskQueue used when creating the TaskQueuePacedSender is used for pacing. That is, the "worker thread". Bug: webrtc:14502 Change-Id: I504f8e634653af6493e609db6e42b07d488fd699 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/300820 Reviewed-by: Erik Språng <sprang@webrtc.org> Commit-Queue: Per Kjellander <perkj@webrtc.org> Cr-Commit-Position: refs/heads/main@{#39813}