/usr/share/glib-2.0/ is in libglib2.0-dev 2.42.1-1+b1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/glib-2.0/codegen/
/usr/share/glib-2.0/codegen/__init__.py
/usr/share/glib-2.0/codegen/codegen.py
/usr/share/glib-2.0/codegen/codegen_docbook.py
/usr/share/glib-2.0/codegen/codegen_main.py
/usr/share/glib-2.0/codegen/config.py
/usr/share/glib-2.0/codegen/dbustypes.py
/usr/share/glib-2.0/codegen/parser.py
/usr/share/glib-2.0/codegen/utils.py
/usr/share/glib-2.0/gdb/
/usr/share/glib-2.0/gdb/glib.py
/usr/share/glib-2.0/gdb/gobject.py
/usr/share/glib-2.0/gettext/
/usr/share/glib-2.0/gettext/po/
/usr/share/glib-2.0/gettext/po/Makefile.in.in
/usr/share/glib-2.0/schemas/
/usr/share/glib-2.0/schemas/gschema.dtd