[Sync] Rework Invalidator-related unit tests

sync/notifier/object_id_state_map.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 SYNC_NOTIFIER_OBJECT_ID_STATE_MAP_H_
 #define SYNC_NOTIFIER_OBJECT_ID_STATE_MAP_H_
 
 #include <map>
 #include <string>
 
 #include "google/cacheinvalidation/include/types.h"
 #include "sync/internal_api/public/base/invalidation_state.h"
 #include "sync/internal_api/public/base/model_type_state_map.h"
 #include "sync/notifier/invalidation_util.h"
 
+namespace base {
+class ListValue;
+}  // namespace base
+
 namespace syncer {
 
 typedef std::map<invalidation::ObjectId,
                  InvalidationState,
                  ObjectIdLessThan> ObjectIdStateMap;
 
 // Converts between ObjectIdStateMaps and ObjectIdSets.
 ObjectIdSet ObjectIdStateMapToSet(const ObjectIdStateMap& id_payloads);
 ObjectIdStateMap ObjectIdSetToStateMap(const ObjectIdSet& ids,
                                        const std::string& payload);
 
+bool ObjectIdStateMapEquals(const ObjectIdStateMap& id_state_map1,
+                            const ObjectIdStateMap& id_state_map2);
+
+// Caller takes ownership of the returned dictionary.
+base::ListValue* ObjectIdStateMapToValue(
+    const ObjectIdStateMap& model_type_payloads);
+
+bool ObjectIdStateMapFromValue(const base::ListValue& value,
+                               ObjectIdStateMap* out);
+
 // Converts between ObjectIdStateMaps and ModelTypeStateMaps.
 ModelTypeStateMap ObjectIdStateMapToModelTypeStateMap(
     const ObjectIdStateMap& id_payloads);
 ObjectIdStateMap ModelTypeStateMapToObjectIdStateMap(
     const ModelTypeStateMap& type_payloads);
 
 }  // namespace syncer
 
 #endif  // HOME_DCHENG_SRC_CHROMIUM_SRC_SYNC_NOTIFIER_OBJECT_ID_STATE_MAP_H_