This has been superseeded by just-in-time determination based on state
of gnumbd and git-numberer validation.

BUG=chromium:644915
R=machenbach@chromium.org,sergiyb@chromium.org
NOTRY=True

Review-Url: https://codereview.chromium.org/2583703004
Cr-Commit-Position: refs/heads/master@{#41772}