/usr/share/ is in postgresql-9.3-pgpool2 3.3.2-1ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/postgresql/
/usr/share/postgresql/9.3/
/usr/share/postgresql/9.3/extension/
/usr/share/postgresql/9.3/extension/pgpool_adm--1.0.sql
/usr/share/postgresql/9.3/extension/pgpool-regclass.sql
/usr/share/postgresql/9.3/extension/pgpool_adm.control
/usr/share/postgresql/9.3/extension/pgpool_regclass.control
/usr/share/postgresql/9.3/extension/pgpool_regclass--1.0.sql
/usr/share/postgresql/9.3/extension/pgpool_recovery--1.0.sql
/usr/share/postgresql/9.3/extension/pgpool-recovery.sql
/usr/share/postgresql/9.3/extension/pgpool_recovery.control
/usr/share/doc/
/usr/share/doc/postgresql-9.3-pgpool2/
/usr/share/doc/postgresql-9.3-pgpool2/copyright
/usr/share/doc/postgresql-9.3-pgpool2/changelog.Debian.gz