/usr/share/gconf/defaults/10_libgnome2-common is in libgnome2-common 2.32.1-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | /desktop/gnome/applications/browser/exec epiphany-browser
/desktop/gnome/peripherals/mouse/cursor_theme Adwaita
|