/usr/ is in ubuntu-gnome-default-settings 14.04.1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/
/usr/share/xul-ext/
/usr/share/xul-ext/ubufox/
/usr/share/xul-ext/ubufox/defaults/
/usr/share/xul-ext/ubufox/defaults/preferences/
/usr/share/xul-ext/ubufox/defaults/preferences/ubuntu-gnome-homepage.properties
/usr/share/xul-ext/ubufox/defaults/preferences/001ubuntu-gnome-mods.js
/usr/share/doc/
/usr/share/doc/ubuntu-gnome-default-settings/
/usr/share/doc/ubuntu-gnome-default-settings/changelog.gz
/usr/share/doc/ubuntu-gnome-default-settings/copyright
/usr/share/gnome/
/usr/share/gnome/applications/
/usr/share/gnome/applications/debian-uxterm.desktop
/usr/share/gnome/applications/debian-xterm.desktop
/usr/share/gnome/applications/display.im6.desktop
/usr/share/glib-2.0/
/usr/share/glib-2.0/schemas/
/usr/share/glib-2.0/schemas/20_ubuntu-gnome-default-settings.gschema.override
/usr/share/lightdm/
/usr/share/lightdm/lightdm.conf.d/
/usr/share/lightdm/lightdm.conf.d/60-gnome.conf