* commit '2413aa5838c0d9e653c419c4566ab76a5c7bde2d': Make UsageStats API default on only for the system ActivityManager shouldn't return null for getCurrentUser
* commit '2413aa5838c0d9e653c419c4566ab76a5c7bde2d': Make UsageStats API default on only for the system ActivityManager shouldn't return null for getCurrentUser