/usr/share/glib-2.0/schemas/10_gnome-shell-extensions.gschema.override is in gnome-shell-extensions 3.14.2-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | [org.gnome.shell]
enabled-extensions=['alternative-status-menu@gnome-shell-extensions.gcampax.github.com']
|