Generate dart:html bindings for Dartium as well as Frog. All unittests now pass (or are disabled fo…

client/html/src/AbstractWorkerWrappingImplementation.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.
-
-class AbstractWorkerEventsImplementation extends EventsImplementation implements AbstractWorkerEvents {
-  AbstractWorkerEventsImplementation._wrap(_ptr) : super._wrap(_ptr);
-  
-  EventListenerList get error() => _get('error');
-}
-
-class AbstractWorkerWrappingImplementation extends EventTargetWrappingImplementation implements AbstractWorker {
-  AbstractWorkerWrappingImplementation._wrap(ptr) : super._wrap(ptr);
-
-  AbstractWorkerEvents get on() {
-    if (_on === null) { 
-      _on = new AbstractWorkerEventsImplementation._wrap(_ptr);
-    }
-    return _on;
-  }
-}