GitLab

This makes errors more readable and easier to debug.

Bug: 771347
Change-Id: I4203e1fb4c9dbe76b58928369d6fc373590f6980
Reviewed-on: https://chromium-review.googlesource.com/874951Reviewed-by: agrieve <agrieve@chromium.org>
Commit-Queue: Eric Stevenson <estevenson@chromium.org>
Cr-Commit-Position: refs/heads/master@{#530369}