[gnome-clocks/wip/headerbar] Style the selection menu button

[Stefano Facchini <sfacchini src gnome org>]

commit 38fce0f3543a70d5450d76434c69b36fda98be63
Author: Stefano Facchini <stefano facchini gmail com>
Date:   Fri Mar 8 19:08:59 2013 +0100

    Style the selection menu button

 src/widgets.vala |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/src/widgets.vala b/src/widgets.vala
index 182b15a..f44fa4a 100644
--- a/src/widgets.vala
+++ b/src/widgets.vala
@@ -581,6 +581,7 @@ public class ContentView : Gtk.Bin {
             selection_button = new Gd.HeaderMenuButton ();
             selection_button.label = _("Click on items to select them");
             selection_button.menu_model = selection_menu;
+            selection_button.get_style_context ().add_class ("selection-menu");
             main_toolbar.custom_title = selection_button;
 
             var done_button = main_toolbar.add_button (null, _("Done"), false);