[gtkmm] Gtk::FontButton: Implement the FontChooser interface

[Kjell Ahlstedt <kjellahl src gnome org>]

commit f99efe216551ba47e25bee8ab3d3a98853249882
Author: Kjell Ahlstedt <kjell ahlstedt bredband net>
Date:   Sun Nov 13 15:44:44 2016 +0100

    Gtk::FontButton: Implement the FontChooser interface

 gtk/src/fontbutton.hg |   10 ++++------
 1 files changed, 4 insertions(+), 6 deletions(-)
---
diff --git a/gtk/src/fontbutton.hg b/gtk/src/fontbutton.hg
index 86ba10b..6b1a80f 100644
--- a/gtk/src/fontbutton.hg
+++ b/gtk/src/fontbutton.hg
@@ -17,7 +17,7 @@
  */
 
 #include <gtkmm/button.h>
-//TODO: When we can break ABI:    #include <gtkmm/fontchooser.h>
+#include <gtkmm/fontchooser.h>
 
 _DEFS(gtkmm,gtk)
 _PINCLUDE(gtkmm/private/button_p.h)
@@ -38,11 +38,11 @@ namespace Gtk
  * @ingroup Widgets
  */
 class FontButton
-  : public Button
-  //TODO: When we can break ABI: public FontChooser
+  : public Button,
+    public FontChooser
 {
   _CLASS_GTKOBJECT(FontButton, GtkFontButton, GTK_FONT_BUTTON, Gtk::Button, GtkButton)
-  //TODO: When we can break ABI: _IMPLEMENTS_INTERFACE(FontChooser)
+  _IMPLEMENTS_INTERFACE(FontChooser)
 public:
   _CTOR_DEFAULT()
   _WRAP_CTOR(FontButton(const Glib::ustring& font_name), gtk_font_button_new_with_font)
@@ -70,6 +70,4 @@ public:
   _WRAP_SIGNAL(void font_set(), "font-set")
 };
 
-
 } // namespace Gtk
-