/usr/include/libgoffice-0.8/goffice/canvas/ is in libgoffice-0.8-dev 0.8.17-8.
This file is owned by root:root, with mode 0o755.
..
/usr/include/libgoffice-0.8/goffice/canvas/goc-arc.h
/usr/include/libgoffice-0.8/goffice/canvas/goc-canvas.h
/usr/include/libgoffice-0.8/goffice/canvas/goc-circle.h
/usr/include/libgoffice-0.8/goffice/canvas/goc-ellipse.h
/usr/include/libgoffice-0.8/goffice/canvas/goc-graph.h
/usr/include/libgoffice-0.8/goffice/canvas/goc-group.h
/usr/include/libgoffice-0.8/goffice/canvas/goc-item.h
/usr/include/libgoffice-0.8/goffice/canvas/goc-line.h
/usr/include/libgoffice-0.8/goffice/canvas/goc-path.h
/usr/include/libgoffice-0.8/goffice/canvas/goc-pixbuf.h
/usr/include/libgoffice-0.8/goffice/canvas/goc-polygon.h
/usr/include/libgoffice-0.8/goffice/canvas/goc-polyline.h
/usr/include/libgoffice-0.8/goffice/canvas/goc-rectangle.h
/usr/include/libgoffice-0.8/goffice/canvas/goc-structs.h
/usr/include/libgoffice-0.8/goffice/canvas/goc-styled-item.h
/usr/include/libgoffice-0.8/goffice/canvas/goc-text.h
/usr/include/libgoffice-0.8/goffice/canvas/goc-utils.h
/usr/include/libgoffice-0.8/goffice/canvas/goc-widget.h
/usr/include/libgoffice-0.8/goffice/canvas/goffice-canvas.h