GitLab

Added a unit test to help confirm success of the migration

Bug: 1045266
Test: OSSettingsTimezoneSubpage*

Change-Id: Ifd9d0f07dda4da83e19bab7b1d708bd61be5ad0d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2339279Reviewed-by: Kyle Horimoto <khorimoto@chromium.org>
Commit-Queue: James Hawkins <jhawkins@chromium.org>
Cr-Commit-Position: refs/heads/master@{#795290}