Use 'field' syntax in dart:dom interfaces.

client/dom/generated/src/interface/UIEvent.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.
 
 interface UIEvent extends Event {
 
-  int get charCode();
+  final int charCode;
 
-  int get detail();
+  final int detail;
 
-  int get keyCode();
+  final int keyCode;
 
-  int get layerX();
+  final int layerX;
 
-  int get layerY();
+  final int layerY;
 
-  int get pageX();
+  final int pageX;
 
-  int get pageY();
+  final int pageY;
 
-  DOMWindow get view();
+  final DOMWindow view;
 
-  int get which();
+  final int which;
 
   void initUIEvent(String type, bool canBubble, bool cancelable, DOMWindow view, int detail);
 }