GitLab

Add AdvancedProtectionStatusManager class to observe signin and gaia
account events, and update advanced protection state accordingly.

Bug: 866620
Change-Id: I28453160d030aea9080f8f8c30ad2162aa18372f
Reviewed-on: https://chromium-review.googlesource.com/1157560
Commit-Queue: Jialiu Lin <jialiul@chromium.org>
Reviewed-by: Varun Khaneja <vakh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#583134}