GitLab

The following strings are updated as part of the
transition to Unity:
 - the title of the sync setup and personalization page
 - sync section title and description
 - personalization title
 - unity master toggle title
 - Sign-in prompt title

Mocks:
https://gallery.googleplex.com/projects/MCHbtQVoQ2HCZWnUS9sdsb0Q/files/MCHtA7U1iMGr68-mD5nfi-3ML6EZ2WWTC08

TBR=dpapad@chromium.org

Bug: 853187
Cq-Include-Trybots: luci.chromium.try:closure_compilation
Change-Id: I3184c5e9c8614a1d7bdd900f346b19769e2c985d
Reviewed-on: https://chromium-review.googlesource.com/1102501
Commit-Queue: Thomas Tangl <tangltom@chromium.org>
Reviewed-by: Scott Chen <scottchen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#571432}