GitLab

With tweaks from this comment:
https://github.com/web-platform-tests/wpt/pull/12858#issuecomment-419775438

Bug: 879798
Change-Id: I3806dffd01dcc7a1f7dd21a7fe68ce3c099df181
Reviewed-on: https://chromium-review.googlesource.com/1224010Reviewed-by: Stefan Zager <szager@chromium.org>
Commit-Queue: Philip Jägenstedt <foolip@chromium.org>
Cr-Commit-Position: refs/heads/master@{#594690}