[Effen] Fork stocks and fn.dart so we have something to work on during the porting process

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 'dart:async';
 import 'dart:collection';
 import 'dart:mirrors';
 import 'dart:sky' as sky;
 import 'reflect.dart' as reflect;
-import 'layout.dart';
-
-export 'layout.dart' show Style;
+import 'layout2.dart';
 
 final sky.Tracing _tracing = sky.window.tracing;
 
 final bool _shouldLogRenderDuration = false;
 final bool _shouldTrace = false;
 
 enum _SyncOperation { IDENTICAL, INSERTION, STATEFUL, STATELESS, REMOVAL }
 
 /*
  * All Effen nodes derive from UINode. All nodes have a _parent, a _key and
@@ skipping 927 matching lines @@
     assert(_root.parent == _host);
   }
 }
 
 class Text extends Component {
   Text(this.data) : super(key: '*text*');
   final String data;
   bool get interchangeable => true;
   UINode build() => new Paragraph(children: [new TextFragment(data)]);
 }