Remove support for attribute event listeners.

client/dom/generated/src/wrapping/_XMLHttpRequestWrappingImplementation.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 _XMLHttpRequestWrappingImplementation extends DOMWrapperBase implements XMLHttpRequest {
   _XMLHttpRequestWrappingImplementation() : super() {}
 
   static create__XMLHttpRequestWrappingImplementation() native {
     return new _XMLHttpRequestWrappingImplementation();
   }
 
   bool get asBlob() { return _get_asBlob(this); }
   static bool _get_asBlob(var _this) native;
 
   void set asBlob(bool value) { _set_asBlob(this, value); }
   static void _set_asBlob(var _this, bool value) native;
 
-  EventListener get onabort() { return _get_onabort(this); }
-  static EventListener _get_onabort(var _this) native;
-
-  void set onabort(EventListener value) { _set_onabort(this, value); }
-  static void _set_onabort(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;
-
-  EventListener get onload() { return _get_onload(this); }
-  static EventListener _get_onload(var _this) native;
-
-  void set onload(EventListener value) { _set_onload(this, value); }
-  static void _set_onload(var _this, EventListener value) native;
-
-  EventListener get onloadstart() { return _get_onloadstart(this); }
-  static EventListener _get_onloadstart(var _this) native;
-
-  void set onloadstart(EventListener value) { _set_onloadstart(this, value); }
-  static void _set_onloadstart(var _this, EventListener value) native;
-
-  EventListener get onprogress() { return _get_onprogress(this); }
-  static EventListener _get_onprogress(var _this) native;
-
-  void set onprogress(EventListener value) { _set_onprogress(this, value); }
-  static void _set_onprogress(var _this, EventListener value) native;
-
-  EventListener get onreadystatechange() { return _get_onreadystatechange(this); }
-  static EventListener _get_onreadystatechange(var _this) native;
-
-  void set onreadystatechange(EventListener value) { _set_onreadystatechange(this, value); }
-  static void _set_onreadystatechange(var _this, EventListener value) native;
-
   int get readyState() { return _get_readyState(this); }
   static int _get_readyState(var _this) native;
 
   Blob get responseBlob() { return _get_responseBlob(this); }
   static Blob _get_responseBlob(var _this) native;
 
   String get responseText() { return _get_responseText(this); }
   static String _get_responseText(var _this) native;
 
   String get responseType() { return _get_responseType(this); }
@@ skipping 142 matching lines @@
   static void _send_6(receiver, data) native;
 
   void setRequestHeader(String header, String value) {
     _setRequestHeader(this, header, value);
     return;
   }
   static void _setRequestHeader(receiver, header, value) native;
 
   String get typeName() { return "XMLHttpRequest"; }
 }