Restore enterprise policy checks

Restore enterprise policy checks removed by commit
fdab44f9 and not since restored by other
changes.

Bug: 325886855
Bug: 316584466
Bug: 235445309
Test: Treehugger only
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:5d80553a155524e73713348fc11b9f98bee0308b)
Merged-In: Id3d79805bb2289b84ad34ac05a97e50f0410502f
Change-Id: Id3d79805bb2289b84ad34ac05a97e50f0410502f