Move the individual property definitions from client/base/Css to CSSStyleDeclaration.

client/touch/InfiniteScroller.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.
 
 /**
  * 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 118 matching lines @@
   void _registerEventListeners() {
     _scroller.onScrollerEnd.add((Event event) { _onScrollEnd(); });
   }
 
   /**
    * Hides one div and shows another.
    */
   void _updateVisibility(bool isLoading, Element element,
                          Element loadingElement) {
     if (element != null) {
-      Css.setDisplay(element.style, isLoading ? "none" : "");
+      element.style.display = isLoading ? "none" : "";
     }
     if (loadingElement != null) {
-      Css.setDisplay(loadingElement.style, isLoading ? "" : "none");
+      loadingElement.style.display = isLoading ? "" : "none";
     }
   }
 }