Implement dual storage permission model

... and remove old special handling of storage permissions.

Test: - Looked at UI with apps in different quadrats of the storage
        permission model
      - Tried to revoke permssion of grandfathered Q app
Bug: 126785920
Change-Id: I1ed80a4d1f681820711796cf2265615261491892
11 files changed
tree: 79a1c98637eeb1c6ee96d19d9603af1861cdcfd5
  1. PermissionController/