/usr/share/gtk-doc/ is in libbonoboui2-dev 2.24.5-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/gtk-doc/html/
/usr/share/gtk-doc/html/libbonoboui/
/usr/share/gtk-doc/html/libbonoboui/bonobo-controls.html
/usr/share/gtk-doc/html/libbonoboui/bonobo-support-utilities.html
/usr/share/gtk-doc/html/libbonoboui/bonobo-ui.html
/usr/share/gtk-doc/html/libbonoboui/ch01.html
/usr/share/gtk-doc/html/libbonoboui/control-frame.png
/usr/share/gtk-doc/html/libbonoboui/control.png
/usr/share/gtk-doc/html/libbonoboui/home.png
/usr/share/gtk-doc/html/libbonoboui/index.html
/usr/share/gtk-doc/html/libbonoboui/index.sgml
/usr/share/gtk-doc/html/libbonoboui/ix01.html
/usr/share/gtk-doc/html/libbonoboui/left.png
/usr/share/gtk-doc/html/libbonoboui/libbonoboui-bonobo-a11y.html
/usr/share/gtk-doc/html/libbonoboui/libbonoboui-bonobo-control-frame.html
/usr/share/gtk-doc/html/libbonoboui/libbonoboui-bonobo-control.html
/usr/share/gtk-doc/html/libbonoboui/libbonoboui-bonobo-file-selector-util.html
/usr/share/gtk-doc/html/libbonoboui/libbonoboui-bonobo-plug.html
/usr/share/gtk-doc/html/libbonoboui/libbonoboui-bonobo-property-control.html
/usr/share/gtk-doc/html/libbonoboui/libbonoboui-bonobo-selector-widget.html
/usr/share/gtk-doc/html/libbonoboui/libbonoboui-bonobo-selector.html
/usr/share/gtk-doc/html/libbonoboui/libbonoboui-bonobo-socket.html
/usr/share/gtk-doc/html/libbonoboui/libbonoboui-bonobo-ui-component.html
/usr/share/gtk-doc/html/libbonoboui/libbonoboui-bonobo-ui-container.html
/usr/share/gtk-doc/html/libbonoboui/libbonoboui-bonobo-ui-engine-config.html
/usr/share/gtk-doc/html/libbonoboui/libbonoboui-bonobo-ui-engine.html
/usr/share/gtk-doc/html/libbonoboui/libbonoboui-bonobo-ui-node.html
/usr/share/gtk-doc/html/libbonoboui/libbonoboui-bonobo-ui-preferences.html
/usr/share/gtk-doc/html/libbonoboui/libbonoboui-bonobo-ui-sync.html
/usr/share/gtk-doc/html/libbonoboui/libbonoboui-bonobo-ui-util.html
/usr/share/gtk-doc/html/libbonoboui/libbonoboui-bonobo-widget.html
/usr/share/gtk-doc/html/libbonoboui/libbonoboui-bonobo-window.html
/usr/share/gtk-doc/html/libbonoboui/libbonoboui-bonobo-wrapper.html
/usr/share/gtk-doc/html/libbonoboui/libbonoboui-faq.html
/usr/share/gtk-doc/html/libbonoboui/libbonoboui.devhelp
/usr/share/gtk-doc/html/libbonoboui/libbonoboui.devhelp2
/usr/share/gtk-doc/html/libbonoboui/right.png
/usr/share/gtk-doc/html/libbonoboui/style.css
/usr/share/gtk-doc/html/libbonoboui/up.png