GitLab

Previously, the commit queue only runs ChromeDriver tests on Linux.
This CL expands the test to other desktop platforms, including Mac
and Windows.

Bug: 793370
Change-Id: I2a28d3a5c8371edc28566010739681acfac41c21
Reviewed-on: https://chromium-review.googlesource.com/881641Reviewed-by: Caleb Rouleau <crouleau@chromium.org>
Reviewed-by: John Budorick <jbudorick@chromium.org>
Commit-Queue: John Chen <johnchen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#531399}