Rename Container's desiredSize argument to width and height arguments.

sky/sdk/lib/framework/components2/floating_action_button.dart

Index: sky/sdk/lib/framework/components2/floating_action_button.dart
diff --git a/sky/sdk/lib/framework/components2/floating_action_button.dart b/sky/sdk/lib/framework/components2/floating_action_button.dart
index e4beed8b3c508a43ff8a5d62d930664146fcd698..08e7c74a02985b3346ce178c9e4afad1a89ec654 100644
--- a/sky/sdk/lib/framework/components2/floating_action_button.dart
+++ b/sky/sdk/lib/framework/components2/floating_action_button.dart
@@ -31,7 +31,8 @@ class FloatingActionButton extends Component {
           canvas.drawCircle(radius, radius, radius, new sky.Paint()..color = Red[500]);
         },
         child: new Container(
-          desiredSize: const sky.Size(_kSize, _kSize),
+          width: _kSize,
+          height: _kSize,
           child: new InkWell(children: children))),
       level: level);
   }