This class adds a convenience method that allows *sending* a task
to the queue (as opposed to posting). Sending is essentially
Post+Wait, a pattern that we don't want to encourage use of
in production code, but is convenient to have from a testing
perspective and there are already several places in the
source code where we use it.
Change-Id: I6efd1b2257e6c641294bb6e4eb53b0021d9553ca
Bug: webrtc:8848
Reviewed-on: https://webrtc-review.googlesource.com/50441
Reviewed-by: Magnus Jedvert <magjed@webrtc.org>
Commit-Queue: Tommi <tommi@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#22022}
