First cut at badge implementation. Right now it just uses static

chrome/browser/views/browser_actions_container.h

 // Copyright (c) 2009 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_VIEWS_BROWSER_ACTIONS_PANEL_H_
 #define CHROME_BROWSER_VIEWS_BROWSER_ACTIONS_PANEL_H_
 
 #include <vector>
 
 #include "chrome/common/notification_observer.h"
@@ skipping 37 matching lines @@
   // Overridden from views::View:
   virtual gfx::Size GetPreferredSize();
   virtual void Layout();
 
   // Overridden from NotificationObserver:
   virtual void Observe(NotificationType type,
                        const NotificationSource& source,
                        const NotificationDetails& details);
 
  private:
+  // We override PaintChildren so that we can paint the badges on top of them.
+  virtual void PaintChildren(gfx::Canvas* canvas);
+
+  // Paints an individual badge.
+  virtual void PaintBadge(gfx::Canvas* canvas, views::TextButton* button,
+                          const SkColor& badge_color,
+                          const std::string& text);
+
   // The vector of browser actions (icons/image buttons for each action).
   std::vector<views::TextButton*> browser_action_views_;
 
   NotificationRegistrar registrar_;
 
   Profile* profile_;
 
   // The toolbar that owns us.
   ToolbarView* toolbar_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserActionsContainer);
 };
 
 #endif  // CHROME_BROWSER_VIEWS_BROWSER_ACTIONS_PANEL_H_