diff -r 000000000000 -r 6474c204b198 widget/gtk/compat/gdk/gdkx.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/widget/gtk/compat/gdk/gdkx.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,25 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef GDKX_WRAPPER_H
+#define GDKX_WRAPPER_H
+
+#define gdk_x11_window_lookup_for_display gdk_x11_window_lookup_for_display_
+#define gdk_x11_window_get_xid gdk_x11_window_get_xid_
+#include_next <gdk/gdkx.h>
+#undef gdk_x11_window_lookup_for_display
+#undef gdk_x11_window_get_xid
+
+static inline GdkWindow *
+gdk_x11_window_lookup_for_display(GdkDisplay *display, Window window)
+{
+  return gdk_window_lookup_for_display(display, window);
+}
+
+static inline Window
+gdk_x11_window_get_xid(GdkWindow *window)
+{
+  return(GDK_WINDOW_XWINDOW(window));
+}
+#endif /* GDKX_WRAPPER_H */