GitLab

This CL introduces concrete usage examples.

Bug: 
Change-Id: I9ecc5731aff810fb6b5e2cbf818f610ab6c1a7a8
Reviewed-on: https://chromium-review.googlesource.com/657259
Commit-Queue: François Doray <fdoray@chromium.org>
Reviewed-by: Gabriel Charette <gab@chromium.org>
Cr-Commit-Position: refs/heads/master@{#548528}