[Sync] Add a sanity integration test for USS.

components/sync/test/fake_server/fake_server_entity.h

 // 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.
 
 #ifndef COMPONENTS_SYNC_TEST_FAKE_SERVER_FAKE_SERVER_ENTITY_H_
 #define COMPONENTS_SYNC_TEST_FAKE_SERVER_FAKE_SERVER_ENTITY_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 13 matching lines @@
   //
   // If |inner_id| is globally unique, then the returned ID will also be
   // globally unique.
   static std::string CreateId(const syncer::ModelType& model_type,
                               const std::string& inner_id);
 
   // Returns the ID string of the top level node for the specified type.
   static std::string GetTopLevelId(const syncer::ModelType& model_type);
 
   virtual ~FakeServerEntity();
-  const std::string& GetId() const;
-  syncer::ModelType GetModelType() const;
+  const std::string& id() const { return id_; }
+  const std::string& client_defined_unique_tag() const {
+    return client_defined_unique_tag_;
+  }
+  syncer::ModelType model_type() const { return model_type_; }
   int64_t GetVersion() const;
   void SetVersion(int64_t version);
   const std::string& GetName() const;
   void SetName(const std::string& name);
 
   // Replaces |specifics_| with |updated_specifics|. This method is meant to be
   // used to mimic a client commit.
   void SetSpecifics(const sync_pb::EntitySpecifics& updated_specifics);
 
   // Common data items needed by server
   virtual bool RequiresParentId() const = 0;
   virtual std::string GetParentId() const = 0;
   virtual void SerializeAsProto(sync_pb::SyncEntity* proto) const = 0;
   virtual bool IsDeleted() const;
   virtual bool IsFolder() const;
   virtual bool IsPermanent() const;
 
  protected:
   // Extracts the ModelType from |id|. If |id| is malformed or does not contain
   // a valid ModelType, UNSPECIFIED is returned.
   static syncer::ModelType GetModelTypeFromId(const std::string& id);
 
   FakeServerEntity(const std::string& id,
+                   const std::string& client_defined_unique_tag,
                    const syncer::ModelType& model_type,
                    int64_t version,
                    const std::string& name);
 
   void SerializeBaseProtoFields(sync_pb::SyncEntity* sync_entity) const;
 
  private:
   // The entity's ID.
-  std::string id_;
+  const std::string id_;
+
+  // The tag for this entity. Can be empty for bookmarks or permanent entities.
+  const std::string client_defined_unique_tag_;
 
   // The ModelType that categorizes this entity.
-  syncer::ModelType model_type_;
+  const syncer::ModelType model_type_;
 
   // The version of this entity.
   int64_t version_;
 
   // The name of the entity.
   std::string name_;
 
   // The EntitySpecifics for the entity.
   sync_pb::EntitySpecifics specifics_;
 };
 
 }  // namespace fake_server
 
 #endif  // COMPONENTS_SYNC_TEST_FAKE_SERVER_FAKE_SERVER_ENTITY_H_