Get rid of a lot of () for getters.

lib/html/src/UIEventWrappingImplementation.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 UIEventWrappingImplementation extends EventWrappingImplementation implements UIEvent {
   UIEventWrappingImplementation._wrap(ptr) : super._wrap(ptr);
 
   factory UIEventWrappingImplementation(String type, Window view, int detail,
       [bool canBubble = true, bool cancelable = true]) {
     final e = dom.document.createEvent("UIEvent");
     e.initUIEvent(type, canBubble, cancelable, LevelDom.unwrap(view), detail);
     return LevelDom.wrapUIEvent(e);
   }
 
-  int get charCode() => _ptr.charCode;
+  int get charCode => _ptr.charCode;
 
-  int get detail() => _ptr.detail;
+  int get detail => _ptr.detail;
 
-  int get keyCode() => _ptr.keyCode;
+  int get keyCode => _ptr.keyCode;
 
-  int get layerX() => _ptr.layerX;
+  int get layerX => _ptr.layerX;
 
-  int get layerY() => _ptr.layerY;
+  int get layerY => _ptr.layerY;
 
-  int get pageX() => _ptr.pageX;
+  int get pageX => _ptr.pageX;
 
-  int get pageY() => _ptr.pageY;
+  int get pageY => _ptr.pageY;
 
-  Window get view() => LevelDom.wrapWindow(_ptr.view);
+  Window get view => LevelDom.wrapWindow(_ptr.view);
 
-  int get which() => _ptr.which;
+  int get which => _ptr.which;
 }