network: Add firewall helper functions

This code will be used in subsequent commits to add
firewall zone support to connections.

https://bugzilla.gnome.org/show_bug.cgi?id=694577

panels/network/connection-editor/firewall-helpers.h

@@ -0,0 +1,32 @@
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * (C) Copyright 2013 Red Hat, Inc.
+ */
+
+#ifndef _FIREWALL_HELPERS_H_
+#define _FIREWALL_HELPERS_H_
+
+#include <nm-setting-connection.h>
+#include <gtk/gtk.h>
+
+void firewall_ui_setup      (NMSettingConnection *setting,
+                             GtkWidget           *combo,
+                             GCancellable        *cancellable);
+void firewall_ui_to_setting (NMSettingConnection *setting,
+                             GtkWidget           *combo);
+
+
+#endif  /* _FIREWALL_HELPERS_H_ */