Merge "arc: Use location service consent."

Merge "arc: Use location service consent."

> This adds option to use location service into OptIn flow and fix
> similar backup and restore consent.
>
> BUG=631264
> TEST=Manually on device together with Android side CL. On fresh device
>      go through OptIn flow and set use location service off. Start
>      Play Store and install Google Maps app. On start, Google Maps
>      asks permission to activate usage of Location service. Disable
>      and re-enable Arc and go throug OptIn flow but set this feature
>      on and repeat Google Maps installation. On start, Google maps
>      app does not ask permission to modify usage Location service.
> CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:closure_compilation
>
> Review-Url: https://codereview.chromium.org/2179803002
> Cr-Commit-Position: refs/heads/master@{#407650}
> (cherry picked from commit 905787aa98feb38d969bcf03b0214a9d1a5a4c43)