/usr/include/cogl/ is in libcogl-dev 1.10.0-0ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/include/cogl/cogl/
/usr/include/cogl/cogl/cogl-attribute-buffer.h
/usr/include/cogl/cogl/cogl-attribute.h
/usr/include/cogl/cogl/cogl-bitmap.h
/usr/include/cogl/cogl/cogl-buffer.h
/usr/include/cogl/cogl/cogl-clip-state.h
/usr/include/cogl/cogl/cogl-clutter-xlib.h
/usr/include/cogl/cogl/cogl-clutter.h
/usr/include/cogl/cogl/cogl-color.h
/usr/include/cogl/cogl/cogl-context.h
/usr/include/cogl/cogl/cogl-defines.h
/usr/include/cogl/cogl/cogl-deprecated.h
/usr/include/cogl/cogl/cogl-depth-state.h
/usr/include/cogl/cogl/cogl-display.h
/usr/include/cogl/cogl/cogl-enum-types.h
/usr/include/cogl/cogl/cogl-euler.h
/usr/include/cogl/cogl/cogl-fixed.h
/usr/include/cogl/cogl/cogl-framebuffer.h
/usr/include/cogl/cogl/cogl-glib-source.h
/usr/include/cogl/cogl/cogl-index-buffer.h
/usr/include/cogl/cogl/cogl-indices.h
/usr/include/cogl/cogl/cogl-material-compat.h
/usr/include/cogl/cogl/cogl-matrix.h
/usr/include/cogl/cogl/cogl-meta-texture.h
/usr/include/cogl/cogl/cogl-object.h
/usr/include/cogl/cogl/cogl-offscreen.h
/usr/include/cogl/cogl/cogl-onscreen-template.h
/usr/include/cogl/cogl/cogl-onscreen.h
/usr/include/cogl/cogl/cogl-pango.h
/usr/include/cogl/cogl/cogl-path-functions.h
/usr/include/cogl/cogl/cogl-path.h
/usr/include/cogl/cogl/cogl-pipeline-layer-state.h
/usr/include/cogl/cogl/cogl-pipeline-state.h
/usr/include/cogl/cogl/cogl-pipeline.h
/usr/include/cogl/cogl/cogl-pixel-buffer.h
/usr/include/cogl/cogl/cogl-poll.h
/usr/include/cogl/cogl/cogl-primitive.h
/usr/include/cogl/cogl/cogl-primitives.h
/usr/include/cogl/cogl/cogl-quaternion.h
/usr/include/cogl/cogl/cogl-renderer.h
/usr/include/cogl/cogl/cogl-shader.h
/usr/include/cogl/cogl/cogl-snippet.h
/usr/include/cogl/cogl/cogl-sub-texture.h
/usr/include/cogl/cogl/cogl-swap-chain.h
/usr/include/cogl/cogl/cogl-texture-2d-sliced.h
/usr/include/cogl/cogl/cogl-texture-2d.h
/usr/include/cogl/cogl/cogl-texture-3d.h
/usr/include/cogl/cogl/cogl-texture-pixmap-x11.h
/usr/include/cogl/cogl/cogl-texture-rectangle.h
/usr/include/cogl/cogl/cogl-texture.h
/usr/include/cogl/cogl/cogl-types.h
/usr/include/cogl/cogl/cogl-vector.h
/usr/include/cogl/cogl/cogl-vertex-buffer.h
/usr/include/cogl/cogl/cogl-xlib-renderer.h
/usr/include/cogl/cogl/cogl-xlib.h
/usr/include/cogl/cogl/cogl.h
/usr/include/cogl/cogl/cogl1-context.h
/usr/include/cogl/cogl/cogl2-compatibility.h
/usr/include/cogl/cogl/cogl2-experimental.h
/usr/include/cogl/cogl/cogl2-path.h