/usr/include/libvirt-gobject-1.0/libvirt-gobject/ is in libvirt-glib-1.0-dev 0.1.6-1ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/include/libvirt-gobject-1.0/libvirt-gobject/libvirt-gobject-connection.h
/usr/include/libvirt-gobject-1.0/libvirt-gobject/libvirt-gobject-domain-device.h
/usr/include/libvirt-gobject-1.0/libvirt-gobject/libvirt-gobject-domain-disk.h
/usr/include/libvirt-gobject-1.0/libvirt-gobject/libvirt-gobject-domain-interface.h
/usr/include/libvirt-gobject-1.0/libvirt-gobject/libvirt-gobject-domain-snapshot.h
/usr/include/libvirt-gobject-1.0/libvirt-gobject/libvirt-gobject-domain.h
/usr/include/libvirt-gobject-1.0/libvirt-gobject/libvirt-gobject-enums.h
/usr/include/libvirt-gobject-1.0/libvirt-gobject/libvirt-gobject-interface.h
/usr/include/libvirt-gobject-1.0/libvirt-gobject/libvirt-gobject-main.h
/usr/include/libvirt-gobject-1.0/libvirt-gobject/libvirt-gobject-manager.h
/usr/include/libvirt-gobject-1.0/libvirt-gobject/libvirt-gobject-network-filter.h
/usr/include/libvirt-gobject-1.0/libvirt-gobject/libvirt-gobject-network.h
/usr/include/libvirt-gobject-1.0/libvirt-gobject/libvirt-gobject-node-device.h
/usr/include/libvirt-gobject-1.0/libvirt-gobject/libvirt-gobject-secret.h
/usr/include/libvirt-gobject-1.0/libvirt-gobject/libvirt-gobject-storage-pool.h
/usr/include/libvirt-gobject-1.0/libvirt-gobject/libvirt-gobject-storage-vol.h
/usr/include/libvirt-gobject-1.0/libvirt-gobject/libvirt-gobject-stream.h
/usr/include/libvirt-gobject-1.0/libvirt-gobject/libvirt-gobject.h