Refactor fn2.dart, since it breached our 1000-line threshold.

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

Index: sky/sdk/lib/framework/widgets/floating_action_button.dart
diff --git a/sky/sdk/lib/framework/components2/floating_action_button.dart b/sky/sdk/lib/framework/widgets/floating_action_button.dart
similarity index 96%
rename from sky/sdk/lib/framework/components2/floating_action_button.dart
rename to sky/sdk/lib/framework/widgets/floating_action_button.dart
index b5555f1cf451c152528ba5307c9b5bee9ef453c0..3aa9124665683f3ff021c194f5345bc45f4a81d4 100644
--- a/sky/sdk/lib/framework/components2/floating_action_button.dart
+++ b/sky/sdk/lib/framework/widgets/floating_action_button.dart
@@ -2,13 +2,13 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import '../fn2.dart';
-import '../rendering/box.dart';
+import 'dart:sky' as sky;
+
 import '../painting/shadows.dart';
 import '../theme2/colors.dart';
-import 'dart:sky' as sky;
 import 'ink_well.dart';
 import 'material.dart';
+import 'wrappers.dart';
 
 // TODO(eseidel): This needs to change based on device size?
 // http://www.google.com/design/spec/layout/metrics-keylines.html#metrics-keylines-keylines-spacing