GitLab

Short-circuit our localization logic to only attempt to localize a file
if it may be required.

Bug: None
Change-Id: I0b418dbad004a6cc890ae02713f9ebeeed9c92fb
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2518199Reviewed-by: Karan Bhatia <karandeepb@chromium.org>
Commit-Queue: Devlin <rdevlin.cronin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#825725}