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

content/browser/indexed_db/indexed_db_database.h

 // Copyright (c) 2013 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_DATABASE_H_
 #define CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_DATABASE_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 71 matching lines @@
   void OpenConnection(std::unique_ptr<IndexedDBPendingConnection> connection);
   void DeleteDatabase(scoped_refptr<IndexedDBCallbacks> callbacks);
   const IndexedDBDatabaseMetadata& metadata() const { return metadata_; }
 
   void CreateObjectStore(int64_t transaction_id,
                          int64_t object_store_id,
                          const base::string16& name,
                          const IndexedDBKeyPath& key_path,
                          bool auto_increment);
   void DeleteObjectStore(int64_t transaction_id, int64_t object_store_id);
+
+  // Returns a pointer to a newly created transaction. The object is owned
+  // by |transaction_coordinator_|.
   IndexedDBTransaction* CreateTransaction(
       int64_t transaction_id,
       IndexedDBConnection* connection,
       const std::vector<int64_t>& object_store_ids,
       blink::WebIDBTransactionMode mode);
   void Close(IndexedDBConnection* connection, bool forced);
   void ForceClose();
 
   // Ack that one of the connections notified with a "versionchange" event did
   // not promptly close. Therefore a "blocked" event should be fired at the
@@ skipping 230 matching lines @@
   bool processing_pending_requests_ = false;
 
   bool experimental_web_platform_features_enabled_;
 
   DISALLOW_COPY_AND_ASSIGN(IndexedDBDatabase);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_DATABASE_H_