Fix build after hixie's rename

sky/sdk/lib/framework/fn2.dart

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 library fn;
 
 import 'app.dart';
 import 'dart:async';
 import 'dart:collection';
 import 'dart:mirrors';
@@ skipping 311 matching lines @@
     _nodeMap.remove(root);
     super._remove();
   }
 }
 
 abstract class OneChildRenderObjectWrapper extends RenderObjectWrapper {
   final UINode child;
 
   OneChildRenderObjectWrapper({ this.child, Object key }) : super(key: key);
 
-  void syncRenderObject(RenderNodeWrapper old) {
-    super.syncRenderNode(old);
-    UINode oldChild = old == null ? null : (old as OneChildRenderNodeWrapper).child;
+  void syncRenderObject(RenderObjectWrapper old) {
+    super.syncRenderObject(old);
+    UINode oldChild = old == null ? null : (old as OneChildRenderObjectWrapper).child;
     syncChild(child, oldChild, null);
   }
 
   void insert(RenderObjectWrapper child, dynamic slot) {
     assert(slot == null);
     root.child = child.root;
   }
 
   void removeChild(UINode node) {
     root.child = null;
@@ skipping 85 matching lines @@
   ) {
     assert(!_debugHasDuplicateIds());
   }
 
   void insert(RenderObjectWrapper child, dynamic slot) {
     assert(slot == null || slot is RenderObject);
     root.add(child.root, before: slot);
   }
 
   void removeChild(UINode node) {
-    assert(root is ContainerRenderNodeMixin);
+    assert(root is ContainerRenderObjectMixin);
     root.remove(node.root);
     super.removeChild(node);
   }
 
   void _remove() {
     assert(children != null);
     for (var child in children) {
       assert(child != null);
       removeChild(child);
     }
@@ skipping 503 matching lines @@
     assert(root.parent is RenderView);
   }
 }
 
 class Text extends Component {
   Text(this.data) : super(key: '*text*');
   final String data;
   bool get interchangeable => true;
   UINode build() => new Paragraph(text: data);
 }