Split Size into Size and Offset.

sky/sdk/lib/example/raw/launcher.dart

Index: sky/sdk/lib/example/raw/launcher.dart
diff --git a/sky/sdk/lib/example/raw/launcher.dart b/sky/sdk/lib/example/raw/launcher.dart
index 69625cae4c979464347fd3145023571eccd6cbbc..96dfc39bfef0a597d35c937a12825f3a440a0cf9 100644
--- a/sky/sdk/lib/example/raw/launcher.dart
+++ b/sky/sdk/lib/example/raw/launcher.dart
@@ -9,15 +9,14 @@ import 'package:sky/framework/shell.dart' as shell;
 import 'package:mojom/intents/intents.mojom.dart';
 
 Picture draw(int a, int r, int g, int b) {
-  double width = view.width;
-  double height = view.height;
+  Size size = new Size(view.width, view.height);
 
   PictureRecorder recorder = new PictureRecorder();
-  Canvas canvas = new Canvas(recorder, width, height);
-  double radius = min(width, height) * 0.45;
+  Canvas canvas = new Canvas(recorder, size);
+  double radius = size.shortestSide * 0.45;
 
   Paint paint = new Paint()..color = new Color.fromARGB(a, r, g, b);
-  canvas.drawRect(new Rect.fromSize(new Size(width, height)), paint);
+  canvas.drawRect(new Rect.fromSize(size), paint);
   return recorder.endRecording();
 }