/usr/ is in gnome-shell-extension-multi-monitors 0.00~git20160725.1.7390a66-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/
/usr/share/doc/
/usr/share/doc/gnome-shell-extension-multi-monitors/
/usr/share/doc/gnome-shell-extension-multi-monitors/changelog.Debian.gz
/usr/share/doc/gnome-shell-extension-multi-monitors/copyright
/usr/share/gnome-shell/
/usr/share/gnome-shell/extensions/
/usr/share/gnome-shell/extensions/multi-monitors-add-on@spin83/
/usr/share/gnome-shell/extensions/multi-monitors-add-on@spin83/convenience.js
/usr/share/gnome-shell/extensions/multi-monitors-add-on@spin83/extension.js
/usr/share/gnome-shell/extensions/multi-monitors-add-on@spin83/icons/
/usr/share/gnome-shell/extensions/multi-monitors-add-on@spin83/icons/multi-monitors-l-symbolic.svg
/usr/share/gnome-shell/extensions/multi-monitors-add-on@spin83/icons/multi-monitors-r-symbolic.svg
/usr/share/gnome-shell/extensions/multi-monitors-add-on@spin83/indicator.js
/usr/share/gnome-shell/extensions/multi-monitors-add-on@spin83/locale/
/usr/share/gnome-shell/extensions/multi-monitors-add-on@spin83/locale/de/
/usr/share/gnome-shell/extensions/multi-monitors-add-on@spin83/locale/de/LC_MESSAGES/
/usr/share/gnome-shell/extensions/multi-monitors-add-on@spin83/locale/de/LC_MESSAGES/multi-monitors-add-on.mo
/usr/share/gnome-shell/extensions/multi-monitors-add-on@spin83/locale/de/LC_MESSAGES/multi-monitors-add-on.po
/usr/share/gnome-shell/extensions/multi-monitors-add-on@spin83/locale/fr/
/usr/share/gnome-shell/extensions/multi-monitors-add-on@spin83/locale/fr/LC_MESSAGES/
/usr/share/gnome-shell/extensions/multi-monitors-add-on@spin83/locale/fr/LC_MESSAGES/multi-monitors-add-on.mo
/usr/share/gnome-shell/extensions/multi-monitors-add-on@spin83/locale/fr/LC_MESSAGES/multi-monitors-add-on.po
/usr/share/gnome-shell/extensions/multi-monitors-add-on@spin83/metadata.json
/usr/share/gnome-shell/extensions/multi-monitors-add-on@spin83/mmlayout.js
/usr/share/gnome-shell/extensions/multi-monitors-add-on@spin83/mmoverview.js
/usr/share/gnome-shell/extensions/multi-monitors-add-on@spin83/mmpanel.js
/usr/share/gnome-shell/extensions/multi-monitors-add-on@spin83/multi-monitors-add-on.pot
/usr/share/gnome-shell/extensions/multi-monitors-add-on@spin83/prefs.js
/usr/share/gnome-shell/extensions/multi-monitors-add-on@spin83/schemas/
/usr/share/gnome-shell/extensions/multi-monitors-add-on@spin83/schemas/gschemas.compiled
/usr/share/gnome-shell/extensions/multi-monitors-add-on@spin83/schemas/org.gnome.shell.extensions.multi-monitors-add-on.gschema.xml
/usr/share/gnome-shell/extensions/multi-monitors-add-on@spin83/stylesheet.css