Make it possible to test that the stock app doesn't crash on startup and paints the basic scaffold …

sky/examples/stocks2/lib/stock_app.dart

Index: sky/examples/stocks2/lib/stock_app.dart
diff --git a/sky/examples/stocks2/lib/stock_app.dart b/sky/examples/stocks2/lib/stock_app.dart
index 66e4eb25a839f5176f1bf429a1c8575a441d27d5..db559946e6d6c142c56c9f094102afa0f080af6c 100644
--- a/sky/examples/stocks2/lib/stock_app.dart
+++ b/sky/examples/stocks2/lib/stock_app.dart
@@ -2,7 +2,9 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+import 'package:sky/framework/app.dart';
 import 'package:sky/framework/editing2/input.dart';
+import 'package:sky/framework/rendering/box.dart';
 import 'package:sky/framework/theme2/colors.dart' as colors;
 import 'package:sky/framework/widgets/drawer.dart';
 import 'package:sky/framework/widgets/drawer_header.dart';
@@ -32,7 +34,7 @@ class StocksApp extends App {
 
   List<Stock> _stocks = [];
 
-  StocksApp() : super() {
+  StocksApp({ RenderView renderViewOverride }) : super(renderViewOverride: renderViewOverride) {
     // if (debug)
     //   new Timer(new Duration(seconds: 1), dumpState);
     new StockDataFetcher((StockData data) {