Allow system apps to be granted android.permission.PACKAGE_USAGE_STATS
Allow system apps to be granted android.permission.PACKAGE_USAGE_STATS

Bug:22008542
Change-Id: Ifb4565ec8077e88596f0304328c083c7d1c9db04

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base