f6841ef548
In the past, we allowed non system overlays on user-debug rom. Acoording to the user-debug guildline, we should not have differnt behavior between the user build and user debug rom. To maintain the consistency between user and user debug rom, We're creating a new developer setting for allowing non-system overlay on Settings. By default, we don't allow any non-system app overlays on Settings app unless user turns it on explictly. Test: Run robotest. Turn on setting, see the overlays on Settings. Turn off setting, do not see the overlays on Settings. Fix: 144989059 Change-Id: I87f00a2eda91de003c6e542e7ec45a066f46fbf7