Remove support for attribute event listeners.

client/dom/generated/src/wrapping/_NotificationWrappingImplementation.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.
 
 class _NotificationWrappingImplementation extends DOMWrapperBase implements Notification {
   _NotificationWrappingImplementation() : super() {}
 
   static create__NotificationWrappingImplementation() native {
     return new _NotificationWrappingImplementation();
   }
 
   String get dir() { return _get_dir(this); }
   static String _get_dir(var _this) native;
 
   void set dir(String value) { _set_dir(this, value); }
   static void _set_dir(var _this, String value) native;
 
-  EventListener get onclick() { return _get_onclick(this); }
-  static EventListener _get_onclick(var _this) native;
-
-  void set onclick(EventListener value) { _set_onclick(this, value); }
-  static void _set_onclick(var _this, EventListener value) native;
-
-  EventListener get onclose() { return _get_onclose(this); }
-  static EventListener _get_onclose(var _this) native;
-
-  void set onclose(EventListener value) { _set_onclose(this, value); }
-  static void _set_onclose(var _this, EventListener value) native;
-
-  EventListener get ondisplay() { return _get_ondisplay(this); }
-  static EventListener _get_ondisplay(var _this) native;
-
-  void set ondisplay(EventListener value) { _set_ondisplay(this, value); }
-  static void _set_ondisplay(var _this, EventListener value) native;
-
-  EventListener get onerror() { return _get_onerror(this); }
-  static EventListener _get_onerror(var _this) native;
-
-  void set onerror(EventListener value) { _set_onerror(this, value); }
-  static void _set_onerror(var _this, EventListener value) native;
-
   String get replaceId() { return _get_replaceId(this); }
   static String _get_replaceId(var _this) native;
 
   void set replaceId(String value) { _set_replaceId(this, value); }
   static void _set_replaceId(var _this, String value) native;
 
   void addEventListener(String type, EventListener listener, [bool useCapture = null]) {
     if (useCapture === null) {
       _addEventListener_Notification(this, type, listener);
       return;
@@ skipping 29 matching lines @@
   static void _removeEventListener_Notification_2(receiver, type, listener, useCapture) native;
 
   void show() {
     _show(this);
     return;
   }
   static void _show(receiver) native;
 
   String get typeName() { return "Notification"; }
 }