Expose extensions update method via DBus.
This feature is needed to properly update extensions via extensions.gnome.org.
Relative issue: https://gitlab.gnome.org/GNOME/chrome-gnome-shell/issues/7
This feature is needed to properly update extensions via extensions.gnome.org.
Relative issue: https://gitlab.gnome.org/GNOME/chrome-gnome-shell/issues/7