Split PrefService into PrefService, PrefServiceSimple and PrefServiceSyncable.

chrome/browser/prefs/chrome_pref_service_factory.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_PREFS_CHROME_PREF_SERVICE_FACTORY_H_
+#define CHROME_BROWSER_PREFS_CHROME_PREF_SERVICE_FACTORY_H_
+
+#include "chrome/browser/prefs/pref_service_builder.h"
+
+namespace base {
+class SequencedTaskRunner;
+}
+
+namespace policy {
+class PolicyService;
+}
+
+class FilePath;
+class PrefServiceBuilder;
+class PrefServiceSimple;
+class PrefServiceSyncable;
+class PrefStore;
+
+class ChromePrefServiceFactory {
+ public:
+  ChromePrefServiceFactory();
+  virtual ~ChromePrefServiceFactory();
+
+  // Factory methods that create and initialize a new instance of a
+  // PrefService for Chrome with the applicable PrefStores. The
+  // |pref_filename| points to the user preference file. This is the
+  // usual way to create a new PrefService.
+  // |extension_pref_store| is used as the source for extension-controlled
+  // preferences and may be NULL.
+  // |policy_service| is used as the source for mandatory or recommended
+  // policies.
+  // The PrefService takes ownership of |extension_pref_store|.

[Mattias Nissler (ping if slow), 2012/12/20 13:41:52]

PrefStores are RefCounted, please remove this sentence.

[Jói, 2012/12/20 16:30:31]

Done.

+  // If |async| is true, asynchronous version is used.
+  // Notifies using PREF_INITIALIZATION_COMPLETED in the end. Details is set to
+  // the created PrefService or NULL if creation has failed. Note, it is
+  // guaranteed that in asynchronous version initialization happens after this
+  // function returned.
+
+  PrefServiceSimple* CreateLocalState(
+      const FilePath& pref_filename,
+      base::SequencedTaskRunner* pref_io_task_runner,
+      policy::PolicyService* policy_service,
+      PrefStore* extension_prefs,
+      bool async);
+
+  PrefServiceSyncable* CreateProfilePrefs(
+      const FilePath& pref_filename,
+      base::SequencedTaskRunner* pref_io_task_runner,
+      policy::PolicyService* policy_service,
+      PrefStore* extension_prefs,
+      bool async);
+
+ private:
+  void PrepareBuilder(
+      const FilePath& pref_filename,
+      base::SequencedTaskRunner* pref_io_task_runner,
+      policy::PolicyService* policy_service,
+      PrefStore* extension_prefs,
+      bool async);
+
+  void ResetDefaultState();
+
+  PrefServiceBuilder builder_;
+
+  DISALLOW_COPY_AND_ASSIGN(ChromePrefServiceFactory);
+};
+
+#endif  // CHROME_BROWSER_PREFS_CHROME_PREF_SERVICE_FACTORY_H_