/usr/ is in libgnome-desktop-3-dev 3.18.2-1ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/
/usr/share/gtk-doc/
/usr/share/gtk-doc/html/
/usr/share/gtk-doc/html/gnome-desktop3/
/usr/share/gtk-doc/html/gnome-desktop3/gnome-desktop3-gnome-pnp-ids.html
/usr/share/gtk-doc/html/gnome-desktop3/gnome-desktop3-gnome-bg.html
/usr/share/gtk-doc/html/gnome-desktop3/xkb-info.html
/usr/share/gtk-doc/html/gnome-desktop3/intro.html
/usr/share/gtk-doc/html/gnome-desktop3/thumbnail.html
/usr/share/gtk-doc/html/gnome-desktop3/style.css
/usr/share/gtk-doc/html/gnome-desktop3/gnome-desktop3-gnome-rr-config.html
/usr/share/gtk-doc/html/gnome-desktop3/gnome-desktop3-Language-Utilities.html
/usr/share/gtk-doc/html/gnome-desktop3/GnomeIdleMonitor.html
/usr/share/gtk-doc/html/gnome-desktop3/idle-monitor.html
/usr/share/gtk-doc/html/gnome-desktop3/right.png
/usr/share/gtk-doc/html/gnome-desktop3/languages.html
/usr/share/gtk-doc/html/gnome-desktop3/background.html
/usr/share/gtk-doc/html/gnome-desktop3/gnome-desktop3-gnome-rr.html
/usr/share/gtk-doc/html/gnome-desktop3/up.png
/usr/share/gtk-doc/html/gnome-desktop3/up-insensitive.png
/usr/share/gtk-doc/html/gnome-desktop3/randr.html
/usr/share/gtk-doc/html/gnome-desktop3/annotation-glossary.html
/usr/share/gtk-doc/html/gnome-desktop3/index.html
/usr/share/gtk-doc/html/gnome-desktop3/left-insensitive.png
/usr/share/gtk-doc/html/gnome-desktop3/index.sgml
/usr/share/gtk-doc/html/gnome-desktop3/gnome-desktop3.devhelp2
/usr/share/gtk-doc/html/gnome-desktop3/left.png
/usr/share/gtk-doc/html/gnome-desktop3/GnomeDesktopThumbnailFactory.html
/usr/share/gtk-doc/html/gnome-desktop3/right-insensitive.png
/usr/share/gtk-doc/html/gnome-desktop3/home.png
/usr/share/gtk-doc/html/gnome-desktop3/wall-clock.html
/usr/share/gtk-doc/html/gnome-desktop3/GnomeWallClock.html
/usr/share/gtk-doc/html/gnome-desktop3/GnomeXkbInfo.html
/usr/share/gir-1.0/
/usr/share/gir-1.0/GnomeDesktop-3.0.gir
/usr/share/doc/
/usr/share/doc/libgnome-desktop-3-dev/
/usr/share/doc/libgnome-desktop-3-dev/copyright
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/gnome-desktop-3.0.pc
/usr/include/
/usr/include/gnome-desktop-3.0/
/usr/include/gnome-desktop-3.0/libgnome-desktop/
/usr/include/gnome-desktop-3.0/libgnome-desktop/gnome-idle-monitor.h
/usr/include/gnome-desktop-3.0/libgnome-desktop/gnome-rr.h
/usr/include/gnome-desktop-3.0/libgnome-desktop/gnome-pnp-ids.h
/usr/include/gnome-desktop-3.0/libgnome-desktop/gnome-wall-clock.h
/usr/include/gnome-desktop-3.0/libgnome-desktop/gnome-xkb-info.h
/usr/include/gnome-desktop-3.0/libgnome-desktop/gnome-bg-slide-show.h
/usr/include/gnome-desktop-3.0/libgnome-desktop/gnome-bg-crossfade.h
/usr/include/gnome-desktop-3.0/libgnome-desktop/gnome-desktop-thumbnail.h
/usr/include/gnome-desktop-3.0/libgnome-desktop/gnome-rr-config.h
/usr/include/gnome-desktop-3.0/libgnome-desktop/gnome-bg.h
/usr/include/gnome-desktop-3.0/libgnome-desktop/gnome-languages.h
/usr/share/doc/libgnome-desktop-3-dev/AUTHORS
/usr/share/doc/libgnome-desktop-3-dev/README
/usr/share/doc/libgnome-desktop-3-dev/NEWS.gz
/usr/share/doc/libgnome-desktop-3-dev/changelog.Debian.gz
/usr/lib/x86_64-linux-gnu/libgnome-desktop-3.so