chromeos: Remove old status-area related code.

chrome/browser/chromeos/status/data_promo_notification.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_DATA_PROMO_NOTIFICATION_H_
 #define CHROME_BROWSER_CHROMEOS_STATUS_DATA_PROMO_NOTIFICATION_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "base/memory/weak_ptr.h"
 #include "ui/views/widget/widget.h"
 
+class PrefService;
+
 namespace views {
 class View;
 }  // namespace views
 
 namespace chromeos {
 class MessageBubble;
 class MessageBubbleLinkListener;
 class NetworkLibrary;
 
 class DataPromoNotification : public views::Widget::Observer {
  public:
   DataPromoNotification();
   virtual ~DataPromoNotification();
 
+  static void RegisterPrefs(PrefService* local_state);
+
   const std::string& deal_info_url() const { return deal_info_url_; }
   const std::string& deal_topup_url() const { return deal_topup_url_; }
 
   // Shows 3G promo notification if needed.
   void ShowOptionalMobileDataPromoNotification(
       NetworkLibrary* cros,
       views::View* host,
       MessageBubbleLinkListener* listener);
 
   // Closes message bubble.
@@ skipping 18 matching lines @@
 
   // Factory for delaying showing promo notification.
   base::WeakPtrFactory<DataPromoNotification> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(DataPromoNotification);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_STATUS_DATA_PROMO_NOTIFICATION_H_