GitLab

BUG=b:118418065,b:118415374,b:64996728,b:77833131
TEST=Check the result of getUserMedia() matches the external camera in
     settings 100 times when Video Capture Service is not running.

Change-Id: If83b5b3070724321b3524903505c98e6391a2dea
Reviewed-on: https://chromium-review.googlesource.com/c/1347961Reviewed-by: Ricky Liang <jcliang@chromium.org>
Commit-Queue: Shik Chen <shik@chromium.org>
Cr-Commit-Position: refs/heads/master@{#610784}