Split PrefService into PrefService, PrefServiceSimple and PrefServiceSyncable.

chrome/browser/chromeos/status/data_promo_notification.cc

 // 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.
 
 #include "chrome/browser/chromeos/status/data_promo_notification.h"
 
 #include "ash/shell.h"
 #include "ash/shell_window_ids.h"
 #include "ash/system/chromeos/network/network_observer.h"
 #include "ash/system/tray/system_tray.h"
@@ skipping 109 matching lines @@
 
 DataPromoNotification::DataPromoNotification()
     : check_for_promo_(true),
       ALLOW_THIS_IN_INITIALIZER_LIST(weak_ptr_factory_(this)) {
 }
 
 DataPromoNotification::~DataPromoNotification() {
   CloseNotification();
 }
 
-void DataPromoNotification::RegisterPrefs(PrefService* local_state) {
+void DataPromoNotification::RegisterPrefs(PrefServiceSimple* local_state) {
   // Carrier deal notification shown count defaults to 0.
   local_state->RegisterIntegerPref(prefs::kCarrierDealPromoShown, 0);
 }
 
 void DataPromoNotification::ShowOptionalMobileDataPromoNotification(
     NetworkLibrary* cros,
     views::View* host,
     ash::NetworkTrayDelegate* listener) {
   // Display one-time notification for non-Guest users on first use
   // of Mobile Data connection or if there's a carrier deal defined
@@ skipping 71 matching lines @@
       SetCarrierDealPromoShown(carrier_deal_promo_pref + 1);
   }
 }
 
 void DataPromoNotification::CloseNotification() {
   ash::Shell::GetInstance()->system_tray_notifier()->NotifyClearNetworkMessage(
       ash::NetworkObserver::MESSAGE_DATA_PROMO);
 }
 
 }  // namespace chromeos