Deprecating old DOM event APIs.

tests/html/wheelevent_test.dart

 // Copyright (c) 2013, 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.
 
 library wheel_event_test;
 import '../../pkg/unittest/lib/unittest.dart';
 import '../../pkg/unittest/lib/html_config.dart';
 import 'dart:html';
 
 
@@ skipping 27 matching lines @@
     var event = new WheelEvent(wheelEvent,
       window,
       0,
       240,
       0,
       100,
       200,
       10,
       20,
       0);
-    element.$dom_dispatchEvent(event);
+    element.dispatchEvent(event);
   });
 
   test('wheelEvent Stream', () {
     var element = new DivElement();
     element.onMouseWheel.listen(expectAsync1((e) {
       expect(e.screenX, 100);
       expect(e.deltaX, 0);
       expect(e.deltaY, 240);
     }));
     var event = new WheelEvent(wheelEvent,
       window,
       0,
       240,
       0,
       100,
       200,
       10,
       20,
       0);
-    element.$dom_dispatchEvent(event);
+    element.dispatchEvent(event);
   });
 }