Split Size into Size and Offset.

sky/sdk/lib/rendering/sky_binding.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' as sky;
 
 import '../base/scheduler.dart' as scheduler;
 import '../base/hit_test.dart';
 import 'box.dart';
 import 'object.dart';
@@ skipping 30 matching lines @@
     assert(_instance == this);
   }
 
   static SkyBinding _instance; // used to enforce that we're a singleton
   static SkyBinding get instance => _instance;
 
   RenderView _renderView;
   RenderView get renderView => _renderView;
 
   ViewConstraints _createConstraints() {
-    return new ViewConstraints(width: sky.view.width, height: sky.view.height);
+    return new ViewConstraints(size: new Size(sky.view.width, sky.view.height));
   }
   void _handleMetricsChanged() {
     _renderView.rootConstraints = _createConstraints();
   }
 
   Function onFrame;
   RenderBox get root => _renderView.child;
   void set root(RenderBox value) {
     _renderView.child = value;
   }
@@ skipping 64 matching lines @@
       entry.target.handleEvent(event, entry);
   }
 
   String toString() => 'Render Tree:\n${_renderView}';
 
   void debugDumpRenderTree() {
     toString().split('\n').forEach(print);
   }
   
 }