Fix parsing of DOMString[] in IDL

client/dom/generated/src/wrapping/_IDBDatabaseWrappingImplementation.dart

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 // WARNING: Do not edit - generated code.
 
 class _IDBDatabaseWrappingImplementation extends DOMWrapperBase implements IDBDatabase {
   _IDBDatabaseWrappingImplementation() : super() {}
 
   static create__IDBDatabaseWrappingImplementation() native {
@@ skipping 68 matching lines @@
     }
   }
   static void _removeEventListener(receiver, type, listener) native;
   static void _removeEventListener_2(receiver, type, listener, useCapture) native;
 
   IDBVersionChangeRequest setVersion(String version) {
     return _setVersion(this, version);
   }
   static IDBVersionChangeRequest _setVersion(receiver, version) native;
 
-  IDBTransaction transaction(String storeName, int mode) {
-    return _transaction(this, storeName, mode);
+  IDBTransaction transaction(String storeName, [int mode = null]) {
+    if (mode === null) {
+      return _transaction(this, storeName);
+    } else {
+      return _transaction_2(this, storeName, mode);
+    }
   }
-  static IDBTransaction _transaction(receiver, storeName, mode) native;
+  static IDBTransaction _transaction(receiver, storeName) native;
+  static IDBTransaction _transaction_2(receiver, storeName, mode) native;
 
   String get typeName() { return "IDBDatabase"; }
 }