This file is indexed.

/usr/share/unity-control-center/keybindings/50-compiz-windows.xml is in compiz-gnome 1:0.9.13.1+18.04.20180302-0ubuntu1.

This file is owned by root:root, with mode 0o777.

It is a symlink to /usr/share/unity-control-center/keybindings/../../gnome-control-center/keybindings/50-compiz-windows.xml