Revert "Parts must start with 'part of'" and "Attempt to fix VM build"

dart/samples/ui_lib/touch/TouchUtil.dart

-part of touch;
-
 // 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.
 
 /**
  * Wraps a callback with translations of mouse events to touch events. Use
  * this function to invoke your callback that expects touch events after
  * touch events are created from the actual mouse events.
  */
 EventListener mouseToTouchCallback(EventListener callback) {
@@ skipping 222 matching lines @@
   int get which => wrapped.which;
 
   bool get altKey => wrapped.altKey;
 
   bool get ctrlKey => wrapped.ctrlKey;
 
   bool get metaKey => wrapped.metaKey;
 
   bool get shiftKey => wrapped.shiftKey;
 }