Add support for a managed user pref store to PrefService.

chrome/test/base/testing_pref_service_syncable.cc

 // Copyright (c) 2013 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/test/base/testing_pref_service_syncable.h"
 
 #include "base/bind.h"
 #include "base/prefs/pref_notifier_impl.h"
 #include "base/prefs/pref_value_store.h"
 #include "components/user_prefs/pref_registry_syncable.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 template <>
 TestingPrefServiceBase<PrefServiceSyncable, user_prefs::PrefRegistrySyncable>::
     TestingPrefServiceBase(TestingPrefStore* managed_prefs,
                            TestingPrefStore* user_prefs,
                            TestingPrefStore* recommended_prefs,
                            user_prefs::PrefRegistrySyncable* pref_registry,
                            PrefNotifierImpl* pref_notifier)
     : PrefServiceSyncable(
           pref_notifier,
           new PrefValueStore(managed_prefs,
-                             NULL,
-                             NULL,
+                             NULL,  // managed_user_prefs
+                             NULL,  // extension_prefs
+                             NULL,  // command_line_prefs
                              user_prefs,
                              recommended_prefs,
                              pref_registry->defaults().get(),
                              pref_notifier),
           user_prefs,
           pref_registry,
           base::Bind(&TestingPrefServiceBase<
               PrefServiceSyncable,
               user_prefs::PrefRegistrySyncable>::HandleReadError),
           false),
@@ skipping 26 matching lines @@
         pref_notifier) {
 }
 
 TestingPrefServiceSyncable::~TestingPrefServiceSyncable() {
 }
 
 user_prefs::PrefRegistrySyncable* TestingPrefServiceSyncable::registry() {
   return static_cast<user_prefs::PrefRegistrySyncable*>(
       DeprecatedGetPrefRegistry());
 }