Implement automatically generated constructors for frog and dartium dart:html

client/html/generated/html/frog/_SharedWorkerFactoryProvider.dart

Index: client/html/generated/html/frog/_SharedWorkerFactoryProvider.dart
diff --git a/client/html/generated/html/frog/_SharedWorkerFactoryProvider.dart b/client/html/generated/html/frog/_SharedWorkerFactoryProvider.dart
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index 0000000000000000000000000000000000000000..70271c1d3a68f74560fd259d4bbceee49929ea3f
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+++ b/client/html/generated/html/frog/_SharedWorkerFactoryProvider.dart
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+// 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 _SharedWorkerFactoryProvider {
+  factory SharedWorker(String scriptURL, [String name]) native '''
+      if (name == null) return new SharedWorker(scriptURL);
+      return new SharedWorker(scriptURL, name);
+    ''';
+}