IndexedDB: WrapUnique(new T(args..)) -> MakeUnique<T>(args...)

content/browser/indexed_db/indexed_db_class_factory.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 CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_CLASS_FACTORY_H_
 #define CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_CLASS_FACTORY_H_
 
 #include <stdint.h>
 
 #include <memory>
 #include <set>
 
 #include "base/lazy_instance.h"
+#include "base/memory/ref_counted.h"
 #include "content/browser/indexed_db/indexed_db_backing_store.h"
 #include "content/browser/indexed_db/indexed_db_database.h"
 #include "content/common/content_export.h"
 #include "third_party/WebKit/public/platform/modules/indexeddb/WebIDBTypes.h"
 
 namespace leveldb {
 class Iterator;
 }  // namespace leveldb
 
 namespace content {
@@ skipping 10 matching lines @@
 // Use this factory to create some IndexedDB objects. Exists solely to
 // facilitate tests which sometimes need to inject mock objects into the system.
 class CONTENT_EXPORT IndexedDBClassFactory {
  public:
   typedef IndexedDBClassFactory* GetterCallback();
 
   static IndexedDBClassFactory* Get();
 
   static void SetIndexedDBClassFactoryGetter(GetterCallback* cb);
 
-  virtual IndexedDBDatabase* CreateIndexedDBDatabase(
+  virtual scoped_refptr<IndexedDBDatabase> CreateIndexedDBDatabase(
       const base::string16& name,
       IndexedDBBackingStore* backing_store,
       IndexedDBFactory* factory,
       const IndexedDBDatabase::Identifier& unique_identifier);
 
   virtual IndexedDBTransaction* CreateIndexedDBTransaction(
       int64_t id,
       base::WeakPtr<IndexedDBConnection> connection,
       const std::set<int64_t>& scope,
       blink::WebIDBTransactionMode mode,
       IndexedDBBackingStore::Transaction* backing_store_transaction);
 
-  virtual LevelDBIteratorImpl* CreateIteratorImpl(
+  virtual std::unique_ptr<LevelDBIteratorImpl> CreateIteratorImpl(
       std::unique_ptr<leveldb::Iterator> iterator);
-  virtual LevelDBTransaction* CreateLevelDBTransaction(LevelDBDatabase* db);
+
+  virtual scoped_refptr<LevelDBTransaction> CreateLevelDBTransaction(
+      LevelDBDatabase* db);
 
  protected:
   IndexedDBClassFactory() {}
   virtual ~IndexedDBClassFactory() {}
   friend struct base::DefaultLazyInstanceTraits<IndexedDBClassFactory>;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_CLASS_FACTORY_H_