components: Extract pref_registry component out of user_prefs.

chrome/browser/prefs/prefs_syncable_service_unittest.cc

 // Copyright 2014 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 "base/json/json_reader.h"
 #include "base/json/json_string_value_serializer.h"
 #include "base/json/json_writer.h"
 #include "base/message_loop/message_loop.h"
 #include "base/prefs/scoped_user_pref_update.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/prefs/pref_model_associator.h"
 #include "chrome/browser/prefs/pref_service_syncable.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/test/base/testing_pref_service_syncable.h"
-#include "components/user_prefs/pref_registry_syncable.h"
+#include "components/pref_registry/pref_registry_syncable.h"
 #include "grit/locale_settings.h"
 #include "sync/api/attachments/attachment_id.h"
 #include "sync/api/attachments/attachment_service_proxy_for_test.h"
 #include "sync/api/sync_change.h"
 #include "sync/api/sync_data.h"
 #include "sync/api/sync_error_factory_mock.h"
 #include "sync/api/syncable_service.h"
 #include "sync/protocol/preference_specifics.pb.h"
 #include "sync/protocol/sync.pb.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 673 matching lines @@
   EXPECT_FALSE(pref->IsDefaultValue());
   // There should be no synced value.
   EXPECT_FALSE(FindValue(prefs::kHomePage, out).get());
   // Switch kHomePage back to unmanaged.
   GetTestingPrefService()->RemoveManagedPref(prefs::kHomePage);
   // The original value should be picked up.
   EXPECT_TRUE(pref->IsDefaultValue());
   // There should still be no synced value.
   EXPECT_FALSE(FindValue(prefs::kHomePage, out).get());
 }