Get rid of a lot of () for getters.

lib/html/src/KeyboardEventWrappingImplementation.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 KeyboardEventWrappingImplementation extends UIEventWrappingImplementation implements KeyboardEvent {
   KeyboardEventWrappingImplementation._wrap(ptr) : super._wrap(ptr);
 
   factory KeyboardEventWrappingImplementation(String type, Window view,
       String keyIdentifier, int keyLocation, [bool canBubble = true,
       bool cancelable = true, bool ctrlKey = false, bool altKey = false,
       bool shiftKey = false, bool metaKey = false, bool altGraphKey = false]) {
     final e = dom.document.createEvent("KeyboardEvent");
     e.initKeyboardEvent(type, canBubble, cancelable, LevelDom.unwrap(view),
         keyIdentifier, keyLocation, ctrlKey, altKey, shiftKey, metaKey,
         altGraphKey);
     return LevelDom.wrapKeyboardEvent(e);
   }
 
-  bool get altGraphKey() => _ptr.altGraphKey;
+  bool get altGraphKey => _ptr.altGraphKey;
 
-  bool get altKey() => _ptr.altKey;
+  bool get altKey => _ptr.altKey;
 
-  bool get ctrlKey() => _ptr.ctrlKey;
+  bool get ctrlKey => _ptr.ctrlKey;
 
-  String get keyIdentifier() => _ptr.keyIdentifier;
+  String get keyIdentifier => _ptr.keyIdentifier;
 
-  int get keyLocation() => _ptr.keyLocation;
+  int get keyLocation => _ptr.keyLocation;
 
-  bool get metaKey() => _ptr.metaKey;
+  bool get metaKey => _ptr.metaKey;
 
-  bool get shiftKey() => _ptr.shiftKey;
+  bool get shiftKey => _ptr.shiftKey;
 
   bool getModifierState(String keyIdentifierArg) {
     return _ptr.getModifierState(keyIdentifierArg);
   }
 }