Split PrefService into PrefService, PrefServiceSimple and PrefServiceSyncable.

chrome/browser/metrics/metrics_service.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.
 
 // This file defines a service that collects information about the user
 // experience in order to help improve future versions of the app.
 
 #ifndef CHROME_BROWSER_METRICS_METRICS_SERVICE_H_
 #define CHROME_BROWSER_METRICS_METRICS_SERVICE_H_
 
@@ skipping 16 matching lines @@
 #include "net/url_request/url_fetcher_delegate.h"
 
 #if defined(OS_CHROMEOS)
 #include "chrome/browser/chromeos/external_metrics.h"
 #endif
 
 class BookmarkModel;
 class BookmarkNode;
 class MetricsReportingScheduler;
 class PrefService;
+class PrefServiceSimple;
 class Profile;
 class TemplateURLService;
 
 namespace base {
 class DictionaryValue;
 class MessageLoopProxy;
 }
 
 namespace content {
 class RenderProcessHost;
@@ skipping 69 matching lines @@
   // to be started.
   scoped_ptr<const base::FieldTrial::EntropyProvider> CreateEntropyProvider(
       bool reporting_will_be_enabled);
 
   // Force the client ID to be generated. This is useful in case it's needed
   // before recording.
   void ForceClientIdCreation();
 
   // At startup, prefs needs to be called with a list of all the pref names and
   // types we'll be using.
-  static void RegisterPrefs(PrefService* local_state);
+  static void RegisterPrefs(PrefServiceSimple* local_state);
 
   // Set up notifications which indicate that a user is performing work. This is
   // useful to allow some features to sleep, until the machine becomes active,
   // such as precluding UMA uploads unless there was recent activity.
   static void SetUpNotifications(content::NotificationRegistrar* registrar,
                                  content::NotificationObserver* observer);
 
   // Implementation of content::NotificationObserver
   virtual void Observe(int type,
                        const content::NotificationSource& source,
@@ skipping 390 matching lines @@
   friend class extensions::ExtensionDownloader;
   friend class extensions::ManifestFetchData;
 
   // Returns true if prefs::kMetricsReportingEnabled is set.
   static bool IsMetricsReportingEnabled();
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(MetricsServiceHelper);
 };
 
 #endif  // CHROME_BROWSER_METRICS_METRICS_SERVICE_H_