GitLab

Changes of this CL:
 - The learn-more link for Sync and Google services is only shown
 when unified consent is enabled.
 - The learn-more link is updated and now redirects to
 https://support.google.com/chrome?p=syncgoogleservices.

Bug: 875869, 875748
Change-Id: Ieeffa33da578d5bb22e547246cd12d285c26c390
Reviewed-on: https://chromium-review.googlesource.com/1181428Reviewed-by: Jochen Eisinger <jochen@chromium.org>
Commit-Queue: Thomas Tangl <tangltom@chromium.org>
Cr-Commit-Position: refs/heads/master@{#584696}