Cleaner and more correct fix for _ChildrenNodeList#forEach.

client/html/src/NodeWrappingImplementation.dart

Index: client/html/src/NodeWrappingImplementation.dart
diff --git a/client/html/src/NodeWrappingImplementation.dart b/client/html/src/NodeWrappingImplementation.dart
index f677df58939e1513a52d593eebd84b90980f668f..220f877c0a272762bbb8716856d3c03ae5d2785b 100644
--- a/client/html/src/NodeWrappingImplementation.dart
+++ b/client/html/src/NodeWrappingImplementation.dart
@@ -23,11 +23,7 @@ class _ChildrenNodeList implements NodeList {
     return LevelDom.wrapNode(_node.firstChild);
   }
 
-  void forEach(void f(Node element)) {
-    for (int i = 0, len = _childNodes.length; i < len; i++) {
-      f(LevelDom.wrapNode(_childNodes[i]));
-    }
-  }
+  void forEach(void f(Node element)) => _toList().forEach(f);
 
   Collection<Node> filter(bool f(Node element)) {
     List<Node> output = new List<Node>();