/usr/share/postgresql/9.4/contrib/ is in postgresql-9.4-pgq3 3.2-2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/postgresql/9.4/contrib/londiste.sql
/usr/share/postgresql/9.4/contrib/londiste.upgrade.sql
/usr/share/postgresql/9.4/contrib/newgrants_londiste.sql
/usr/share/postgresql/9.4/contrib/newgrants_pgq.sql
/usr/share/postgresql/9.4/contrib/newgrants_pgq_coop.sql
/usr/share/postgresql/9.4/contrib/newgrants_pgq_ext.sql
/usr/share/postgresql/9.4/contrib/newgrants_pgq_node.sql
/usr/share/postgresql/9.4/contrib/oldgrants_londiste.sql
/usr/share/postgresql/9.4/contrib/oldgrants_pgq.sql
/usr/share/postgresql/9.4/contrib/oldgrants_pgq_coop.sql
/usr/share/postgresql/9.4/contrib/oldgrants_pgq_ext.sql
/usr/share/postgresql/9.4/contrib/oldgrants_pgq_node.sql
/usr/share/postgresql/9.4/contrib/pgq.sql
/usr/share/postgresql/9.4/contrib/pgq.upgrade.sql
/usr/share/postgresql/9.4/contrib/pgq_coop.sql
/usr/share/postgresql/9.4/contrib/pgq_coop.upgrade.sql
/usr/share/postgresql/9.4/contrib/pgq_ext.sql
/usr/share/postgresql/9.4/contrib/pgq_ext.upgrade.sql
/usr/share/postgresql/9.4/contrib/pgq_lowlevel.sql
/usr/share/postgresql/9.4/contrib/pgq_node.sql
/usr/share/postgresql/9.4/contrib/pgq_node.upgrade.sql
/usr/share/postgresql/9.4/contrib/pgq_triggers.sql
/usr/share/postgresql/9.4/contrib/txid.sql
/usr/share/postgresql/9.4/contrib/uninstall_pgq.sql