This lays out some plumbing for moving the DfaultPermissionGrantPolicy grants
over to RoleControllerService
Test: enable DEBUG flag and `adb logcat | grep -n5 Role`
Change-Id: Ib0a15b7c839aeccb8848423ddaec38103808bdd6
A role is a unique name within the system associated with certain
privileges. There can be multiple applications qualifying for a role,
but only a subset of them can become role holders. To qualify for a
role, an application must meet certain requirements, including
defining certain components in its manifest. Then the application will
need user consent to become the role holder.
Upon becoming a role holder, the application may be granted certain
privileges that are role specific. When an application loses its role,
these privileges will also be revoked.
Bug: 110557011
Test: build
Change-Id: Icd453a3b032857a8fd157048de8b9609f04e28b8
