Implement automatically generated constructors for frog and dartium dart:html

client/html/generated/html/frog/_OptionElementFactoryProvider.dart

+// Copyright (c) 2012, 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.
+
+class _OptionElementFactoryProvider {
+  factory OptionElement([String data = null, String value = null,
+                         bool defaultSelected = null, bool selected = null])
+      native '''
+          if (data == null) return new Option();
+          if (value == null) return new Option(data);
+          if (defaultSelected == null) return new Option(data, value);
+          if (selected == null) return new Option(data, value, defaultSelected);
+          return new Option(data, value, defaultSelected, selected);
+      ''';
+}