GitLab

Update documentation and remove an unused variable.
This is a cleanup after
https://chromium-review.googlesource.com/c/chromium/src/+/935670

Bug: 651348
Change-Id: I6e974b282c61497a8e5fdc2ea092e48d32ee26ed
Reviewed-on: https://chromium-review.googlesource.com/1105827
Commit-Queue: Ivan Kotenkov <kotenkov@yandex-team.ru>
Reviewed-by: Ted Choc <tedchoc@chromium.org>
Reviewed-by: Yaron Friedman <yfriedman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#568770}