GitLab

These builders were migrated and renamed,
and the buildbot builders are now removed.

Bug: 790378,790311,790308
Change-Id: If9c58d228613901a16ff591188c9bba780ad9678
Reviewed-on: https://chromium-review.googlesource.com/1033488Reviewed-by: Dirk Pranke <dpranke@chromium.org>
Commit-Queue: Quinten Yearsley <qyearsley@chromium.org>
Cr-Commit-Position: refs/heads/master@{#554783}