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

dart/samples/ui_lib/touch/InfiniteScroller.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.
 
 /**
  * Adds a listener to the scroller with triggers events
  * when a trigger point at the top, or bottom, of the screen is reached.
  *
  * To use this you will need to have an element with a scroller attached
  * to it. You need to have defined (in pixels) how far from the top or
@@ skipping 125 matching lines @@
   void _updateVisibility(bool isLoading, Element element,
                          Element loadingElement) {
     if (element != null) {
       element.style.display = isLoading ? "none" : "";
     }
     if (loadingElement != null) {
       loadingElement.style.display = isLoading ? "" : "none";
     }
   }
 }