[gnome-shell] dateMenu: add a style class for the clock label

[Jonh Wendell <jwendell src gnome org>]

commit a7bcc4c00dbac26afc988cff3787a85d51ad48a2
Author: Jonh Wendell <jonh wendell intel com>
Date:   Wed Aug 7 15:35:56 2013 -0300

    dateMenu: add a style class for the clock label
    
    it's useful if we need to tweak only the clock's label css.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=705634

 js/ui/dateMenu.js |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/js/ui/dateMenu.js b/js/ui/dateMenu.js
index 85a0ade..3898606 100644
--- a/js/ui/dateMenu.js
+++ b/js/ui/dateMenu.js
@@ -51,6 +51,7 @@ const DateMenuButton = new Lang.Class({
 
         this._clockDisplay = new St.Label();
         this.actor.add_actor(this._clockDisplay);
+        this.actor.add_style_class_name ('clock-display');
 
         hbox = new St.BoxLayout({name: 'calendarArea' });
         this.menu.addActor(hbox);