Create an example app that demonstrates interactive coordination of an fn tree and a raw RenderObje…

sky/tests/raw/sector_layout.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.
 
-import 'package:sky/widgets/basic.dart';
+import 'dart:async';
 
-class HelloWorldApp extends App {
-  UINode build() {
-    return new Text('Hello, fn2!');
-  }
-}
+import '../../examples/rendering/sector_layout.dart';
+import '../resources/display_list.dart';
 
 void main() {
-  new HelloWorldApp();
+  new TestRenderView(buildSectorExample()).endTest();
 }