[gtkmm] Gdk::Window: Ignore an internals function.

[Murray Cumming <murrayc src gnome org>]

commit a8059fce7f0ad43cf208fe1f981244a20be44e3a
Author: Murray Cumming <murrayc murrayc com>
Date:   Tue Sep 15 10:31:32 2015 +0200

    Gdk::Window: Ignore an internals function.

 gdk/src/window.hg |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/gdk/src/window.hg b/gdk/src/window.hg
index 78183a2..25bc3fb 100644
--- a/gdk/src/window.hg
+++ b/gdk/src/window.hg
@@ -59,6 +59,7 @@ class Window : public Glib::Object
   _CLASS_GOBJECT(Window, GdkWindow, GDK_WINDOW, Glib::Object, GObject)
   _STRUCT_NOT_HIDDEN
   _IGNORE(gdk_window_destroy, gdk_window_new, gdk_window_is_destroyed)
+  _IGNORE(gdk_window_get_unscaled_size)
 
 protected:
   Window(const Glib::RefPtr<Window>& parent, GdkWindowAttr* attributes, int attributes_mask);