Merge "Don't assume SYSTEM is current user on boot" into qt-r1-dev

        // the user being changed will cause a reload of all user specific settings, which causes

        // provider initialization, and propagates changes until a steady state is reached

        mCurrentUserId = UserHandle.USER_NULL;

        onUserChangedLocked(UserHandle.USER_SYSTEM);

        onUserChangedLocked(ActivityManager.getCurrentUser());

        // initialize in-memory settings values

        onBackgroundThrottleWhitelistChangedLocked();