/usr/include/grilo-0.3/ is in libgrilo-0.3-dev 0.3.2-2.
This file is owned by root:root, with mode 0o755.
..
/usr/include/grilo-0.3/grilo.h
/usr/include/grilo-0.3/grl-caps.h
/usr/include/grilo-0.3/grl-config.h
/usr/include/grilo-0.3/grl-data.h
/usr/include/grilo-0.3/grl-definitions.h
/usr/include/grilo-0.3/grl-error.h
/usr/include/grilo-0.3/grl-log.h
/usr/include/grilo-0.3/grl-media.h
/usr/include/grilo-0.3/grl-metadata-key.h
/usr/include/grilo-0.3/grl-multiple.h
/usr/include/grilo-0.3/grl-operation-options.h
/usr/include/grilo-0.3/grl-operation.h
/usr/include/grilo-0.3/grl-plugin.h
/usr/include/grilo-0.3/grl-range-value.h
/usr/include/grilo-0.3/grl-registry.h
/usr/include/grilo-0.3/grl-related-keys.h
/usr/include/grilo-0.3/grl-source.h
/usr/include/grilo-0.3/grl-util.h
/usr/include/grilo-0.3/grl-value-helper.h
/usr/include/grilo-0.3/net/
/usr/include/grilo-0.3/net/grl-net-wc.h
/usr/include/grilo-0.3/net/grl-net.h
/usr/include/grilo-0.3/pls/
/usr/include/grilo-0.3/pls/grl-pls.h