/usr/ is in libdbusmenu-gtk3-dev 12.10.3+16.04.20160223.1-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/
/usr/share/gir-1.0/
/usr/lib/x86_64-linux-gnu/libdbusmenu-gtk3.a
/usr/share/gir-1.0/DbusmenuGtk3-0.4.gir
/usr/share/vala/
/usr/share/vala/vapi/
/usr/share/vala/vapi/DbusmenuGtk3-0.4.vapi
/usr/share/doc/
/usr/share/doc/libdbusmenu-gtk3-dev/
/usr/share/doc/libdbusmenu-gtk3-dev/copyright
/usr/include/
/usr/include/libdbusmenu-gtk3-0.4/
/usr/include/libdbusmenu-gtk3-0.4/libdbusmenu-gtk/
/usr/include/libdbusmenu-gtk3-0.4/libdbusmenu-gtk/menuitem.h
/usr/include/libdbusmenu-gtk3-0.4/libdbusmenu-gtk/menu.h
/usr/include/libdbusmenu-gtk3-0.4/libdbusmenu-gtk/client.h
/usr/include/libdbusmenu-gtk3-0.4/libdbusmenu-gtk/dbusmenu-gtk.h
/usr/include/libdbusmenu-gtk3-0.4/libdbusmenu-gtk/parser.h
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/dbusmenu-gtk3-0.4.pc
/usr/share/doc/libdbusmenu-gtk3-dev/changelog.Debian.gz
/usr/lib/x86_64-linux-gnu/libdbusmenu-gtk3.so