Remove support for attribute event listeners.

client/dom/generated/src/wrapping/_FileWriterWrappingImplementation.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 _FileWriterWrappingImplementation extends DOMWrapperBase implements FileWriter {
   _FileWriterWrappingImplementation() : super() {}
 
   static create__FileWriterWrappingImplementation() native {
     return new _FileWriterWrappingImplementation();
   }
 
   FileError get error() { return _get_error(this); }
   static FileError _get_error(var _this) native;
 
   int get length() { return _get_length(this); }
   static int _get_length(var _this) 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 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 onwrite() { return _get_onwrite(this); }
-  static EventListener _get_onwrite(var _this) native;
-
-  void set onwrite(EventListener value) { _set_onwrite(this, value); }
-  static void _set_onwrite(var _this, EventListener value) native;
-
-  EventListener get onwriteend() { return _get_onwriteend(this); }
-  static EventListener _get_onwriteend(var _this) native;
-
-  void set onwriteend(EventListener value) { _set_onwriteend(this, value); }
-  static void _set_onwriteend(var _this, EventListener value) native;
-
-  EventListener get onwritestart() { return _get_onwritestart(this); }
-  static EventListener _get_onwritestart(var _this) native;
-
-  void set onwritestart(EventListener value) { _set_onwritestart(this, value); }
-  static void _set_onwritestart(var _this, EventListener value) native;
-
   int get position() { return _get_position(this); }
   static int _get_position(var _this) native;
 
   int get readyState() { return _get_readyState(this); }
   static int _get_readyState(var _this) native;
 
   void abort() {
     _abort(this);
     return;
   }
@@ skipping 12 matching lines @@
   static void _truncate(receiver, size) native;
 
   void write(Blob data) {
     _write(this, data);
     return;
   }
   static void _write(receiver, data) native;
 
   String get typeName() { return "FileWriter"; }
 }