/usr/include/ is in libbonoboui2-dev 2.24.5-0ubuntu3.
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/usr/include/libbonoboui-2.0/
/usr/include/libbonoboui-2.0/libbonoboui.h
/usr/include/libbonoboui-2.0/bonobo.h
/usr/include/libbonoboui-2.0/bonobo/
/usr/include/libbonoboui-2.0/bonobo/bonobo-ui-config-widget.h
/usr/include/libbonoboui-2.0/bonobo/bonobo-ui-engine.h
/usr/include/libbonoboui-2.0/bonobo/bonobo-widget.h
/usr/include/libbonoboui-2.0/bonobo/bonobo-window.h
/usr/include/libbonoboui-2.0/bonobo/bonobo-dock.h
/usr/include/libbonoboui-2.0/bonobo/bonobo-ui-toolbar-item.h
/usr/include/libbonoboui-2.0/bonobo/bonobo-canvas-component.h
/usr/include/libbonoboui-2.0/bonobo/bonobo-ui-component.h
/usr/include/libbonoboui-2.0/bonobo/bonobo-ui-toolbar-toggle-button-item.h
/usr/include/libbonoboui-2.0/bonobo/bonobo-plug.h
/usr/include/libbonoboui-2.0/bonobo/bonobo-control-frame.h
/usr/include/libbonoboui-2.0/bonobo/bonobo-ui-toolbar-button-item.h
/usr/include/libbonoboui-2.0/bonobo/bonobo-zoomable-frame.h
/usr/include/libbonoboui-2.0/bonobo/bonobo-dock-band.h
/usr/include/libbonoboui-2.0/bonobo/bonobo-selector-widget.h
/usr/include/libbonoboui-2.0/bonobo/bonobo-ui-main.h
/usr/include/libbonoboui-2.0/bonobo/bonobo-selector.h
/usr/include/libbonoboui-2.0/bonobo/bonobo-ui-sync.h
/usr/include/libbonoboui-2.0/bonobo/bonobo-ui-node.h
/usr/include/libbonoboui-2.0/bonobo/bonobo-property-control.h
/usr/include/libbonoboui-2.0/bonobo/bonobo-canvas-item.h
/usr/include/libbonoboui-2.0/bonobo/bonobo-ui-container.h
/usr/include/libbonoboui-2.0/bonobo/bonobo-file-selector-util.h
/usr/include/libbonoboui-2.0/bonobo/bonobo-ui-util.h
/usr/include/libbonoboui-2.0/bonobo/bonobo-ui-type-builtins.h
/usr/include/libbonoboui-2.0/bonobo/bonobo-control.h
/usr/include/libbonoboui-2.0/bonobo/bonobo-socket.h
/usr/include/libbonoboui-2.0/bonobo/bonobo-zoomable.h
/usr/include/libbonoboui-2.0/bonobo/bonobo-dock-layout.h
/usr/include/libbonoboui-2.0/bonobo/bonobo-ui-toolbar.h
/usr/include/libbonoboui-2.0/bonobo/bonobo-dock-item.h