GitLab

All usages have been removed in favour of per-screen exit codes.

BUG=930267

Change-Id: I0f5b0164f3c74cf3fdf3f0c45743f0df71b30852
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1506564
Commit-Queue: Toni Baržić <tbarzic@chromium.org>
Reviewed-by: Jacob Dufault <jdufault@chromium.org>
Cr-Commit-Position: refs/heads/master@{#638445}