/usr/share/selinux/ubuntu/include/system/ is in selinux-policy-ubuntu-dev 0.2.20091117-0ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/selinux/ubuntu/include/system/application.if
/usr/share/selinux/ubuntu/include/system/authlogin.if
/usr/share/selinux/ubuntu/include/system/clock.if
/usr/share/selinux/ubuntu/include/system/daemontools.if
/usr/share/selinux/ubuntu/include/system/fstools.if
/usr/share/selinux/ubuntu/include/system/getty.if
/usr/share/selinux/ubuntu/include/system/hostname.if
/usr/share/selinux/ubuntu/include/system/hotplug.if
/usr/share/selinux/ubuntu/include/system/init.if
/usr/share/selinux/ubuntu/include/system/ipsec.if
/usr/share/selinux/ubuntu/include/system/iptables.if
/usr/share/selinux/ubuntu/include/system/iscsi.if
/usr/share/selinux/ubuntu/include/system/kdump.if
/usr/share/selinux/ubuntu/include/system/libraries.if
/usr/share/selinux/ubuntu/include/system/locallogin.if
/usr/share/selinux/ubuntu/include/system/logging.if
/usr/share/selinux/ubuntu/include/system/lvm.if
/usr/share/selinux/ubuntu/include/system/miscfiles.if
/usr/share/selinux/ubuntu/include/system/modutils.if
/usr/share/selinux/ubuntu/include/system/mount.if
/usr/share/selinux/ubuntu/include/system/netlabel.if
/usr/share/selinux/ubuntu/include/system/pcmcia.if
/usr/share/selinux/ubuntu/include/system/raid.if
/usr/share/selinux/ubuntu/include/system/selinuxutil.if
/usr/share/selinux/ubuntu/include/system/setrans.if
/usr/share/selinux/ubuntu/include/system/sysnetwork.if
/usr/share/selinux/ubuntu/include/system/udev.if
/usr/share/selinux/ubuntu/include/system/unconfined.if
/usr/share/selinux/ubuntu/include/system/userdomain.if
/usr/share/selinux/ubuntu/include/system/xen.if