Reapply r50859 with chromeos fixes.

chrome/browser/chromeos/status/network_menu_button.h

 // Copyright (c) 2006-2008 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_CHROMEOS_STATUS_NETWORK_MENU_BUTTON_H_
 #define CHROME_BROWSER_CHROMEOS_STATUS_NETWORK_MENU_BUTTON_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 53 matching lines @@
   virtual menus::MenuModel::ItemType GetTypeAt(int index) const;
   virtual int GetCommandIdAt(int index) const { return index; }
   virtual string16 GetLabelAt(int index) const;
   virtual bool IsLabelDynamicAt(int index) const { return true; }
   virtual const gfx::Font* GetLabelFontAt(int index) const;
   virtual bool GetAcceleratorAt(int index,
       menus::Accelerator* accelerator) const { return false; }
   virtual bool IsItemCheckedAt(int index) const;
   virtual int GetGroupIdAt(int index) const { return 0; }
   virtual bool GetIconAt(int index, SkBitmap* icon) const;
+  virtual menus::ButtonMenuItemModel* GetButtonMenuItemAt(int index) const {
+    return NULL;
+  }
   virtual bool IsEnabledAt(int index) const;
   virtual menus::MenuModel* GetSubmenuModelAt(int index) const { return NULL; }
   virtual void HighlightChangedTo(int index) {}
   virtual void ActivatedAt(int index);
   virtual void MenuWillShow() {}
 
   // AnimationDelegate implementation.
   virtual void AnimationProgressed(const Animation* animation);
 
   // NetworkLibrary::Observer implementation.
@@ skipping 85 matching lines @@
 
   // The duration of the icon throbbing in milliseconds.
   static const int kThrobDuration;
 
   DISALLOW_COPY_AND_ASSIGN(NetworkMenuButton);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_STATUS_NETWORK_MENU_BUTTON_H_