Add permission granting/revoking logic.

This changes adds the default permission granting/revoking logic
migrated from DefaultPolicyGrantPolicy, with added tri-state
permission, pre-M app and app op support.

Bug: 110557011
Test: build
Change-Id: I3b7bba98f917adf0e44cdcb8b12060670b6b3bcf
5 files changed
tree: bd8b5b0f95d1999939fefe6e4916d708358ec09d
  1. PermissionController/