GitLab

Remove references in /media/audio

MessageLoopForIO is going away soon. Use SingleThreadTaskExecutor for
main functions and SingleThreadTaskEnvironment for tests instead. Both
are no op changes.

This CL was uploaded by git cl split.

R=olka@chromium.org

Bug: 891670
Change-Id: Iea502221ede3aec4f88c76f3ac7ccb744a365b84
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1781151
Auto-Submit: Carlos Caballero <carlscab@google.com>
Commit-Queue: Olga Sharonova <olka@chromium.org>
Reviewed-by: Olga Sharonova <olka@chromium.org>
Cr-Commit-Position: refs/heads/master@{#693702}