GitLab

This is a reland of c78cd05f

Bug: 1044733

Original change's description:
> Parse PerAppTimeLimits policy
>
> Parse PerAppTimeLimits policy received from the server and store
> app limits data in AppActivityRegistry.
> This will be followed up by processing app limits.
>
> Bug: 1015654
> Test: AppTimeTest
> Change-Id: I29691e0c801762a73f01cce217826423359957eb
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2001411
> Reviewed-by: Yilkal Abe <yilkal@chromium.org>
> Commit-Queue: Aga Wronska <agawronska@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#734123}

Bug: 1015654
Change-Id: I5fde631303ca519501220f60d5bd2fdc53759e0a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2017184
Commit-Queue: Aga Wronska <agawronska@chromium.org>
Reviewed-by: Yilkal Abe <yilkal@chromium.org>
Cr-Commit-Position: refs/heads/master@{#734627}