virtual bool row_drop_possible_vfunc (const Gtk::TreeModel::Path&, const Gtk::SelectionData&) const;
};
-class Mixer_UI : public ArdourWidgets::Tabbable, public PBD::ScopedConnectionList, public ARDOUR::SessionHandlePtr, public AxisViewProvider, public Gtkmm2ext::ActionMapOwner
+class Mixer_UI : public ArdourWidgets::Tabbable, public PBD::ScopedConnectionList, public ARDOUR::SessionHandlePtr, public AxisViewProvider
{
public:
static Mixer_UI* instance();