Add enables consistent with Chrome's WebKit

client/dom/generated/src/interface/InjectedScriptHost.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.
 
 interface InjectedScriptHost {
 
   void clearConsoleMessages();
 
   void copyText(String text);
 
   int databaseId(Object database);
 
+  void didCreateWorker(int id, String url, bool isFakeWorker);
+
+  void didDestroyWorker(int id);
+
   Object evaluate(String text);
 
   void inspect(Object objectId, Object hints);
 
   Object inspectedNode(int num);
 
   Object internalConstructorName(Object object);
 
   bool isHTMLAllCollection(Object object);
 
+  int nextWorkerId();
+
   int storageId(Object storage);
 
   String type(Object object);
 }