chromeos: Remove old status-area related code.

chrome/browser/chromeos/status/accessibility_menu_button.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 CHROME_BROWSER_CHROMEOS_STATUS_ACCESSIBILITY_MENU_BUTTON_H_
-#define CHROME_BROWSER_CHROMEOS_STATUS_ACCESSIBILITY_MENU_BUTTON_H_
-#pragma once
-
-#include "chrome/browser/chromeos/status/status_area_button.h"
-#include "chrome/browser/prefs/pref_member.h"
-#include "content/public/browser/notification_observer.h"
-#include "ui/views/controls/button/menu_button_listener.h"
-#include "ui/views/controls/menu/menu_delegate.h"
-
-namespace views {
-class MenuRunner;
-}
-
-namespace chromeos {
-
-class StatusAreaBubbleController;
-
-// A class for the button in the status area which alerts the user when
-// accessibility features are enabled.
-class AccessibilityMenuButton : public StatusAreaButton,
-                                public views::MenuButtonListener,
-                                public views::MenuDelegate,
-                                public content::NotificationObserver {
- public:
-  explicit AccessibilityMenuButton(StatusAreaButton::Delegate* delegate);
-  virtual ~AccessibilityMenuButton();
-
-  // Overridden from views::MenuButtonListener:
-  virtual void OnMenuButtonClicked(views::View* source,
-                                   const gfx::Point& point) OVERRIDE;
-
-  // Overridden from views::MenuDelegate:
-  virtual void ExecuteCommand(int id) OVERRIDE;
-
-  // content::NotificationObserver implementation
-  virtual void Observe(int type,
-                       const content::NotificationSource& source,
-                       const content::NotificationDetails& details) OVERRIDE;
-
- private:
-  // Updates the state along with the preferences.
-  void Update();
-
-  // Prepares menu before showing it.
-  void PrepareMenu();
-
-  // An object synced to the preference, representing if accessibility feature
-  // is enabled or not.
-  BooleanPrefMember accessibility_enabled_;
-  // An object to show menu.
-  scoped_ptr<views::MenuRunner> menu_runner_;
-  // The currently showing bubble controller.
-  scoped_ptr<StatusAreaBubbleController> bubble_controller_;
-
-  DISALLOW_COPY_AND_ASSIGN(AccessibilityMenuButton);
-};
-
-}  // namespace chromeos
-
-#endif  // CHROME_BROWSER_CHROMEOS_STATUS_ACCESSIBILITY_MENU_BUTTON_H_