Enabling access notifications for login wizard

chrome/browser/chromeos/login/screen_lock_view.h

 // Copyright (c) 2010 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_LOGIN_SCREEN_LOCK_VIEW_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_SCREEN_LOCK_VIEW_H_
 #pragma once
 
 #include "chrome/browser/chromeos/login/user_view.h"
 #include "chrome/common/notification_observer.h"
@@ skipping 50 matching lines @@
 
   // views::Textfield::Controller implementation:
   virtual void ContentsChanged(views::Textfield* sender,
                                const string16& new_contents) {}
   virtual bool HandleKeystroke(views::Textfield* sender,
                                const views::Textfield::Keystroke& keystroke);
 
   // UserView::Delegate implementation:
   virtual void OnSignout();
 
+ protected:
+  // views::View implementation:
+  virtual void ViewHierarchyChanged(bool is_add,
+                                    views::View* parent,
+                                    views::View* child);
+
  private:
   friend class test::ScreenLockerTester;
 
   UserView* user_view_;
 
   // For editing the password.
   views::Textfield* password_field_;
   views::Button* unlock_button_;
 
   // ScreenLocker is owned by itself.
   ScreenLocker* screen_locker_;
 
   NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(ScreenLockView);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_SCREEN_LOCK_VIEW_H_