Clean up a bunch of our Dart code.

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

Index: sky/sdk/lib/framework/components2/radio.dart
diff --git a/sky/sdk/lib/framework/components2/radio.dart b/sky/sdk/lib/framework/components2/radio.dart
index 731a298ce49402d592fb6233fa1dc02163829ae1..4a4781cd72efb586727a1677c1018e065091fda8 100644
--- a/sky/sdk/lib/framework/components2/radio.dart
+++ b/sky/sdk/lib/framework/components2/radio.dart
@@ -13,9 +13,6 @@ import 'dart:sky' as sky;
 typedef void ValueChanged(value);
 
 class Radio extends ButtonBase {
-  Object value;
-  Object groupValue;
-  ValueChanged onChanged;
 
   Radio({
     Object key,
@@ -24,6 +21,10 @@ class Radio extends ButtonBase {
     this.groupValue
   }) : super(key: key);
 
+  Object value;
+  Object groupValue;
+  ValueChanged onChanged;
+
   UINode buildContent() {
     // TODO(jackson): This should change colors with the theme
     Color color = highlight ? colors.Purple[500] : const Color(0x8A000000);
@@ -60,4 +61,5 @@ class Radio extends ButtonBase {
   void _handleClick(_) {
     onChanged(value);
   }
+
 }