GitLab

In order to experiment with different deadlines on different machines,
this CL introduces a command line flag to set the default deadline to
synchronize.

Bug: 672962
TBR: sky@chromium.org for services/ui.
Cq-Include-Trybots: master.tryserver.chromium.android:android_optional_gpu_tests_rel
Change-Id: I58e8fd8431c439bca35ca0a3cb400046bf0dc2b6
Reviewed-on: https://chromium-review.googlesource.com/828123
Commit-Queue: Fady Samuel <fsamuel@chromium.org>
Reviewed-by: Antoine Labour <piman@chromium.org>
Reviewed-by: Ken Buchanan <kenrb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#524427}