GitLab

Adds deep links to the Date Time page and Time Zone subpage. Also
adds a focus method to settings-radio-group to help with deep linking.

Bug: 1084154
Change-Id: I53cfc17e386ce6799dff95a5d7afccfe7a847f88
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2382960
Commit-Queue: Daniel Classon <dclasson@google.com>
Commit-Queue: Regan Hsu <hsuregan@chromium.org>
Reviewed-by: Regan Hsu <hsuregan@chromium.org>
Reviewed-by: Kyle Horimoto <khorimoto@chromium.org>
Cr-Commit-Position: refs/heads/master@{#803362}