arc: Enable user control for Arc package sync.

components/sync/driver/sync_prefs_unittest.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 "components/sync/driver/sync_prefs.h"
 
 #include <stdint.h>
 
 #include <map>
 
@@ skipping 135 matching lines @@
     }
     if (it.Get() == syncer::PREFERENCES) {
       expected_preferred_types.Put(syncer::DICTIONARY);
       expected_preferred_types.Put(syncer::PRIORITY_PREFERENCES);
       expected_preferred_types.Put(syncer::SEARCH_ENGINES);
     }
     if (it.Get() == syncer::APPS) {
       expected_preferred_types.Put(syncer::APP_LIST);
       expected_preferred_types.Put(syncer::APP_NOTIFICATIONS);
       expected_preferred_types.Put(syncer::APP_SETTINGS);
+      expected_preferred_types.Put(syncer::ARC_PACKAGE);
     }
     if (it.Get() == syncer::EXTENSIONS) {
       expected_preferred_types.Put(syncer::EXTENSION_SETTINGS);
     }
     if (it.Get() == syncer::TYPED_URLS) {
       expected_preferred_types.Put(syncer::HISTORY_DELETE_DIRECTIVES);
       expected_preferred_types.Put(syncer::SESSIONS);
       expected_preferred_types.Put(syncer::FAVICON_IMAGES);
       expected_preferred_types.Put(syncer::FAVICON_TRACKING);
     }
@@ skipping 87 matching lines @@
 
   EXPECT_EQ(versions.size(), versions2.size());
   for (auto map_iter : versions2) {
     EXPECT_EQ(versions[map_iter.first], map_iter.second);
   }
 }
 
 }  // namespace
 
 }  // namespace sync_driver