* commit '2feb9c9a5153136d6d0f4d32859113fc1ebe6a4f': Make UsageStats API default on only for the system ActivityManager shouldn't return null for getCurrentUser
* commit '2feb9c9a5153136d6d0f4d32859113fc1ebe6a4f': Make UsageStats API default on only for the system ActivityManager shouldn't return null for getCurrentUser