Very minor clean-up of stocks app main.dart.

sky/sdk/example/stocks/lib/main.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/rendering/sky_binding.dart';
 import 'package:sky/theme/colors.dart' as colors;
 import 'package:sky/theme/theme_data.dart';
 import 'package:sky/widgets/basic.dart';
 import 'package:sky/widgets/navigator.dart';
 import 'package:sky/widgets/theme.dart';
 import 'package:sky/widgets/widget.dart';
 
 import 'stock_data.dart';
 import 'stock_home.dart';
 import 'stock_settings.dart';
@@ skipping 38 matching lines @@
   final List<Stock> _stocks = [];
   void didMount() {
     super.didMount();
     new StockDataFetcher((StockData data) {
       setState(() {
         data.appendTo(_stocks);
       });
     });
   }
 
-   Widget build() {
+  Widget build() {
 
     ThemeData theme;
     if (stockMode == StockMode.optimistic) {
       theme = new ThemeData.light(
         primary: colors.Purple,
         accent: colors.RedAccent,
         darkToolbar: true
       );
     } else {
       theme = new ThemeData.dark(
         primary: colors.Red,
         accent: colors.PurpleAccent
       );
     }
 
     return new Theme(
       data: theme,
-       child: new Navigator(_navigationState)
+        child: new Navigator(_navigationState)
      );
    }
 }
 
 void main() {
   runApp(new StocksApp());
 }