GitLab

... and migrate front-end to it.

Bug: 915945
Change-Id: I91220f7d7681fef3faa4c543b729d3475df5b8ce
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1560533
Commit-Queue: Pavel Feldman <pfeldman@chromium.org>
Reviewed-by: Joel Einbinder <einbinder@chromium.org>
Cr-Commit-Position: refs/heads/master@{#649761}