in production code keep using GlobalTaskQueueFactory()
in tests switch to use DefaultTaskQueueFactory directly.
Bug: webrtc:10284
Change-Id: I170274a98324796623089a965a39f0cbb7e281d9
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/128878
Reviewed-by: Steve Anton <steveanton@webrtc.org>
Commit-Queue: Danil Chapovalov <danilchap@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#27296}