/usr/share/postgresql/9.3/extension/uuid-ossp.control is in postgresql-contrib-9.3 9.3.24-0ubuntu0.14.04.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 | # uuid-ossp extension
comment = 'generate universally unique identifiers (UUIDs)'
default_version = '1.0'
module_pathname = '$libdir/uuid-ossp'
relocatable = true
|