Add enables consistent with Chrome's WebKit

client/dom/generated/src/frog/InjectedScriptHost.dart

 
 class InjectedScriptHost native "*InjectedScriptHost" {
 
   void clearConsoleMessages() native;
 
   void copyText(String text) native;
 
   int databaseId(Object database) native;
 
+  void didCreateWorker(int id, String url, bool isFakeWorker) native;
+
+  void didDestroyWorker(int id) native;
+
   Object evaluate(String text) native;
 
   void inspect(Object objectId, Object hints) native;
 
   Object inspectedNode(int num) native;
 
   Object internalConstructorName(Object object) native;
 
   bool isHTMLAllCollection(Object object) native;
 
+  int nextWorkerId() native;
+
   int storageId(Object storage) native;
 
   String type(Object object) native;
 
   var dartObjectLocalStorage;
 
   String get typeName() native;
 }