GitLab

This will make all sites be treated as "control" (no warnings shown)
when the control site config has not yet been loaded. This will prevent
control sites from accidentally showing the warnings, at the expense of
occasionally not showing warnings on non-control sites near browser
startup time.

Bug: 1011089
Change-Id: I32ebb7affc0d0a4bc2a3f6b280c9e5943f9118eb
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1845488
Commit-Queue: Christopher Thompson <cthomp@chromium.org>
Reviewed-by: Emily Stark <estark@chromium.org>
Cr-Commit-Position: refs/heads/master@{#704904}