/usr/include/babeltrace/ is in libbabeltrace-dev 1.2.3-2.
This file is owned by root:root, with mode 0o755.
..
/usr/include/babeltrace/babeltrace.h
/usr/include/babeltrace/clock-types.h
/usr/include/babeltrace/context.h
/usr/include/babeltrace/ctf-writer/
/usr/include/babeltrace/ctf-writer/clock.h
/usr/include/babeltrace/ctf-writer/event-fields.h
/usr/include/babeltrace/ctf-writer/event-types.h
/usr/include/babeltrace/ctf-writer/event.h
/usr/include/babeltrace/ctf-writer/stream.h
/usr/include/babeltrace/ctf-writer/writer.h
/usr/include/babeltrace/format.h
/usr/include/babeltrace/iterator.h
/usr/include/babeltrace/list.h
/usr/include/babeltrace/trace-handle.h