[gnome-mahjongg] Link the undo/redo buttons

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 9da86fd0560938621fdd01ba0fe12e5403cf69de
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Thu Jun 5 10:37:09 2014 -0500

    Link the undo/redo buttons

 src/gnome-mahjongg.vala |    9 +++++++--
 1 files changed, 7 insertions(+), 2 deletions(-)
---
diff --git a/src/gnome-mahjongg.vala b/src/gnome-mahjongg.vala
index 525bd73..96d5807 100644
--- a/src/gnome-mahjongg.vala
+++ b/src/gnome-mahjongg.vala
@@ -94,17 +94,22 @@ public class Mahjongg : Gtk.Application
         title = new Gtk.Label ("");
         title.get_style_context().add_class("title");
 
+        var hbox = new Gtk.Box (Gtk.Orientation.HORIZONTAL, 0);
+        hbox.get_style_context ().add_class ("linked");
+
         var undo_button = new Gtk.Button.from_icon_name ("edit-undo-symbolic", Gtk.IconSize.BUTTON);
         undo_button.valign = Gtk.Align.CENTER;
         undo_button.action_name = "app.undo";
         undo_button.set_tooltip_text (_("Undo your last move"));
-        header_bar.pack_start (undo_button);
+        hbox.pack_start (undo_button);
 
         var redo_button = new Gtk.Button.from_icon_name ("edit-redo-symbolic", Gtk.IconSize.BUTTON);
         redo_button.valign = Gtk.Align.CENTER;
         redo_button.action_name = "app.redo";
         redo_button.set_tooltip_text (_("Redo your last move"));
-        header_bar.pack_start (redo_button);
+        hbox.pack_start (redo_button);
+
+        header_bar.pack_start (hbox);
 
         var hint_button = new Gtk.Button.from_icon_name ("dialog-question-symbolic", Gtk.IconSize.BUTTON);
         hint_button.valign = Gtk.Align.CENTER;