GitLab

Looks like this file moved into docs/testing/ at some point and several
references were stale.

TBR=mef@chromium.org

Bug: None
Change-Id: I3c35be9d3ac9f3821593406746cc9b230a26de80
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1637637
Auto-Submit: Ken Rockot <rockot@google.com>
Reviewed-by: Bo <boliu@chromium.org>
Commit-Queue: Bo <boliu@chromium.org>
Commit-Queue: Ken Rockot <rockot@google.com>
Cr-Commit-Position: refs/heads/master@{#664827}