Use the current task queue in the test instead. R=hbos@webrtc.org Bug: None Change-Id: I266796df3de675a808bcf2da08901411fadc86ae Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/176414 Commit-Queue: Evan Shrubsole <eshr@google.com> Reviewed-by: Henrik Boström <hbos@webrtc.org> Cr-Commit-Position: refs/heads/master@{#31439}