/usr/include/glbinding/gl45/ is in libglbinding-dev 2.1.1-1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/glbinding/gl45/bitfield.h
/usr/include/glbinding/gl45/boolean.h
/usr/include/glbinding/gl45/enum.h
/usr/include/glbinding/gl45/functions.h
/usr/include/glbinding/gl45/gl.h
/usr/include/glbinding/gl45/types.h
/usr/include/glbinding/gl45/values.h
/usr/include/glbinding/gl45core/bitfield.h
/usr/include/glbinding/gl45core/boolean.h
/usr/include/glbinding/gl45core/enum.h
/usr/include/glbinding/gl45core/functions.h
/usr/include/glbinding/gl45core/gl.h
/usr/include/glbinding/gl45core/types.h
/usr/include/glbinding/gl45core/values.h
/usr/include/glbinding/gl45ext/bitfield.h
/usr/include/glbinding/gl45ext/boolean.h
/usr/include/glbinding/gl45ext/enum.h
/usr/include/glbinding/gl45ext/functions.h
/usr/include/glbinding/gl45ext/gl.h
/usr/include/glbinding/gl45ext/types.h
/usr/include/glbinding/gl45ext/values.h