Rename AppView to SkyBinding.

sky/examples/rendering/interactive_flex.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 'dart:sky';
 import 'dart:math' as math;
+
 import 'package:sky/framework/net/image_cache.dart' as image_cache;
-import 'package:sky/app/view.dart';
 import 'package:sky/painting/text_style.dart';
+import 'package:sky/rendering/block.dart';
 import 'package:sky/rendering/box.dart';
-import 'package:sky/rendering/block.dart';
 import 'package:sky/rendering/flex.dart';
 import 'package:sky/rendering/object.dart';
 import 'package:sky/rendering/paragraph.dart';
+import 'package:sky/rendering/sky_binding.dart';
+
 import '../lib/solid_color_box.dart';
 
 class Touch {
   final double x;
   final double y;
   const Touch(this.x, this.y);
 }
 
 class RenderImageGrow extends RenderImage {
   final Size _startingSize;
 
   RenderImageGrow(String src, Size size) : _startingSize = size, super(src, size);
 
   double _growth = 0.0;
   double get growth => _growth;
   void set growth(double value) {
     _growth = value;
     double newWidth = _startingSize.width == null ? null : _startingSize.width + growth;
     double newHeight = _startingSize.height == null ? null : _startingSize.height + growth;
     requestedSize = new Size(newWidth, newHeight);
   }
 }
 
-AppView app;
 RenderImageGrow image;
 
 Map<int, Touch> touches = new Map();
 void handleEvent(event) {
   if (event is PointerEvent) {
       if (event.type == 'pointermove')
         image.growth = math.max(0.0, image.growth + event.x - touches[event.pointer].x);
     touches[event.pointer] = new Touch(event.x, event.y);
   }
 }
@@ skipping 39 matching lines @@
   addFlexChildSolidColor(column, const Color(0xFF0081C6), flex: 2);
 
   row.add(column);
   column.parentData.flex = 8;
 
   RenderDecoratedBox root = new RenderDecoratedBox(
     decoration: new BoxDecoration(backgroundColor: const Color(0xFFFFFFFF)),
     child: row
   );
 
-  app = new AppView(root: root);
+  new SkyBinding(root: root);
   view.setEventCallback(handleEvent);
 }