Don't use ReversedListView from outside core and collection.

tools/dom/templates/html/impl/impl_Element.darttemplate

Index: tools/dom/templates/html/impl/impl_Element.darttemplate
diff --git a/tools/dom/templates/html/impl/impl_Element.darttemplate b/tools/dom/templates/html/impl/impl_Element.darttemplate
index cb308658c5228f8958c320bd6a63276bccb15173..752c93f479f557f2798e39357ca98b4c2736471e 100644
--- a/tools/dom/templates/html/impl/impl_Element.darttemplate
+++ b/tools/dom/templates/html/impl/impl_Element.darttemplate
@@ -137,8 +137,9 @@ class _ChildrenElementList implements List {
     }
   }
 
-  List<Element> get reversed =>
-      new ReversedListView<Element>(this, 0, null);
+  List<Element> get reversed {
+    return IterableMixinWorkaround.reversedList(this);
+  }
 
   void sort([int compare(Element a, Element b)]) {
     throw new UnsupportedError('TODO(jacobr): should we impl?');
@@ -362,8 +363,9 @@ class _FrozenElementList implements List {
     throw new UnsupportedError('');
   }
 
-  List<Element> get reversed =>
-      new ReversedListView<Element>(this, 0, null);
+  List<Element> get reversed {
+    return IterableMixinWorkaround.reversedList(this);
+  }
 
   void sort([int compare(Element a, Element b)]) {
     throw new UnsupportedError('');