GitLab

Makes it more convenient to run multiple identical emulators at the same
time.

Change-Id: Ibbab1092c751b32ebbc0f647c61823ab9f4199bd
Reviewed-on: https://chromium-review.googlesource.com/1098468
Commit-Queue: agrieve <agrieve@chromium.org>
Reviewed-by: agrieve <agrieve@chromium.org>
Reviewed-by: John Budorick <jbudorick@chromium.org>
Reviewed-by: Peter Wen <wnwen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#567724}