/usr/share/gtk-doc/ is in libgnome-desktop-3-dev 3.4.1-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/gtk-doc/html/
/usr/share/gtk-doc/html/gnome-desktop3/
/usr/share/gtk-doc/html/gnome-desktop3/GnomeDesktopThumbnailFactory.html
/usr/share/gtk-doc/html/gnome-desktop3/background.html
/usr/share/gtk-doc/html/gnome-desktop3/gnome-desktop3-gnome-bg.html
/usr/share/gtk-doc/html/gnome-desktop3/gnome-desktop3-gnome-desktop-utils.html
/usr/share/gtk-doc/html/gnome-desktop3/gnome-desktop3-gnome-rr-config.html
/usr/share/gtk-doc/html/gnome-desktop3/gnome-desktop3-gnome-rr-crtc.html
/usr/share/gtk-doc/html/gnome-desktop3/gnome-desktop3-gnome-rr-labeler.html
/usr/share/gtk-doc/html/gnome-desktop3/gnome-desktop3-gnome-rr-mode.html
/usr/share/gtk-doc/html/gnome-desktop3/gnome-desktop3-gnome-rr-output.html
/usr/share/gtk-doc/html/gnome-desktop3/gnome-desktop3-gnome-rr-screen.html
/usr/share/gtk-doc/html/gnome-desktop3/gnome-desktop3.devhelp2
/usr/share/gtk-doc/html/gnome-desktop3/home.png
/usr/share/gtk-doc/html/gnome-desktop3/index.html
/usr/share/gtk-doc/html/gnome-desktop3/index.sgml
/usr/share/gtk-doc/html/gnome-desktop3/intro.html
/usr/share/gtk-doc/html/gnome-desktop3/left.png
/usr/share/gtk-doc/html/gnome-desktop3/libgnome.html
/usr/share/gtk-doc/html/gnome-desktop3/randr.html
/usr/share/gtk-doc/html/gnome-desktop3/right.png
/usr/share/gtk-doc/html/gnome-desktop3/style.css
/usr/share/gtk-doc/html/gnome-desktop3/thumbnail.html
/usr/share/gtk-doc/html/gnome-desktop3/up.png