/usr/lib/x86_64-linux-gnu/libgnome-bluetooth.so.0 is in unity-control-center 15.04.0+18.04.20180216-0ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libgnome-bluetooth.so.0.0.0