/usr/share/avant-window-navigator/ is in awn-applet-stack 0.4.1~bzr1507-0ubuntu7.
This file is owned by root:root, with mode 0o755.
..
/usr/share/avant-window-navigator/applets/
/usr/share/avant-window-navigator/applets/stacks/
/usr/share/avant-window-navigator/applets/stacks.desktop
/usr/share/avant-window-navigator/applets/stacks/curved_stacks_preferences.glade
/usr/share/avant-window-navigator/applets/stacks/icons/
/usr/share/avant-window-navigator/applets/stacks/icons/stacks-drop.svg
/usr/share/avant-window-navigator/applets/stacks/icons/stacks-full.svg
/usr/share/avant-window-navigator/applets/stacks/stacks-drop.svg
/usr/share/avant-window-navigator/applets/stacks/stacks-full.svg
/usr/share/avant-window-navigator/applets/stacks/stacks_applet.py
/usr/share/avant-window-navigator/applets/stacks/stacks_backend.py
/usr/share/avant-window-navigator/applets/stacks/stacks_backend_file.py
/usr/share/avant-window-navigator/applets/stacks/stacks_backend_folder.py
/usr/share/avant-window-navigator/applets/stacks/stacks_config.py
/usr/share/avant-window-navigator/applets/stacks/stacks_glade.py
/usr/share/avant-window-navigator/applets/stacks/stacks_gui_curved.py
/usr/share/avant-window-navigator/applets/stacks/stacks_gui_dialog.py
/usr/share/avant-window-navigator/applets/stacks/stacks_gui_trasher.py
/usr/share/avant-window-navigator/applets/stacks/stacks_icons.py
/usr/share/avant-window-navigator/applets/stacks/stacks_launcher.py
/usr/share/avant-window-navigator/applets/stacks/stacks_preferences.glade
/usr/share/avant-window-navigator/applets/stacks/stacks_vfs.py
/usr/share/avant-window-navigator/schemas/
/usr/share/avant-window-navigator/schemas/awn-applet-stacks.schema-ini