Convert Pass()→std::move() in //chrome

chrome/browser/prefs/chrome_pref_service_factory.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/prefs/chrome_pref_service_factory.h"
 
 #include <stddef.h>
 
 #include <string>
 #include <vector>
@@ skipping 509 matching lines @@
                  policy_service,
                  supervised_user_settings,
                  user_pref_store,
                  extension_prefs,
                  async);
   scoped_ptr<syncable_prefs::PrefServiceSyncable> pref_service =
       factory.CreateSyncable(pref_registry.get());
 
   ConfigureDefaultSearchPrefMigrationToDictionaryValue(pref_service.get());
 
-  return pref_service.Pass();
+  return pref_service;
 }
 
 void DisableDomainCheckForTesting() {
 #if defined(OS_WIN)
   g_disable_domain_check_for_testing = true;
 #endif  // OS_WIN
 }
 
 bool InitializePrefsFromMasterPrefs(
     const base::FilePath& profile_path,
@@ skipping 12 matching lines @@
 
 void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry) {
   ProfilePrefStoreManager::RegisterProfilePrefs(registry);
 }
 
 void RegisterPrefs(PrefRegistrySimple* registry) {
   ProfilePrefStoreManager::RegisterPrefs(registry);
 }
 
 }  // namespace chrome_prefs