GitLab

Project Beaker on Chrome OS is going to allow child users the addition
of secondary accounts, but it's going to be limited to web only.

- If user has transitioned from child account to regular -
TriggerAccountsPushToArc will add accounts to ARC on startup.
- If user has transitioned from regular account to child -
HandleSupervisionTransition will remove all secondary accounts from
ARC.

Update is going to be executed on startup, since to transition to
another type, user need to sign-out and sign-in again (I think).

ARC CL: http://ag/9615344

Bug: 1017160
Change-Id: I323a18aca9c9f63e6a3869d9b9dd4dd34432c31c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1876089Reviewed-by: Mattias Nissler <mnissler@chromium.org>
Reviewed-by: Yury Khmel <khmel@chromium.org>
Commit-Queue: Anastasiia Nikolaienko <anastasiian@chromium.org>
Cr-Commit-Position: refs/heads/master@{#711171}