Replace more ObserverList with base::ObserverList.

ui/views/controls/menu/native_menu_win.h

 // Copyright (c) 2012 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 UI_VIEWS_CONTROLS_MENU_NATIVE_MENU_WIN_H_
 #define UI_VIEWS_CONTROLS_MENU_NATIVE_MENU_WIN_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 119 matching lines @@
   // system menu.
   HWND system_menu_for_;
 
   // The index of the first item in the model in the menu.
   int first_item_index_;
 
   // The action that took place during the call to RunMenuAt.
   MenuAction menu_action_;
 
   // A list of listeners to call when the menu opens.
-  ObserverList<MenuListener> listeners_;
+  base::ObserverList<MenuListener> listeners_;
 
   // Keep track of whether the listeners have already been called at least
   // once.
   bool listeners_called_;
 
   // See comment in MenuMessageHook for details on these.
   NativeMenuWin* menu_to_select_;
   int position_to_select_;
 
   // If we're a submenu, this is our parent.
@@ skipping 10 matching lines @@
   // has a menu open, because our hook function that receives keyboard
   // events doesn't have a mechanism to get a user data pointer.
   static NativeMenuWin* open_native_menu_win_;
 
   DISALLOW_COPY_AND_ASSIGN(NativeMenuWin);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_CONTROLS_MENU_NATIVE_MENU_WIN_H_