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

sky/sdk/lib/framework/editing2/input.dart

Index: sky/sdk/lib/framework/editing2/input.dart
diff --git a/sky/sdk/lib/framework/components2/input.dart b/sky/sdk/lib/framework/editing2/input.dart
similarity index 91%
rename from sky/sdk/lib/framework/components2/input.dart
rename to sky/sdk/lib/framework/editing2/input.dart
index 0f7d4816398cc64dd69bf11c6bd798d3d7971c53..4a97f575b1623e36fe8969245a47bfb6aa66c436 100644
--- a/sky/sdk/lib/framework/components2/input.dart
+++ b/sky/sdk/lib/framework/editing2/input.dart
@@ -2,15 +2,14 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-import '../editing2/editable_string.dart';
-import '../editing2/editable_text.dart';
-import '../editing2/keyboard.dart';
-import '../fn2.dart';
-import '../theme2/colors.dart';
-import '../theme2/typography.dart' as typography;
-import '../rendering/flex.dart';
 import 'dart:sky' as sky;
 
+import '../rendering/flex.dart';
+import '../widgets/wrappers.dart';
+import 'editable_string.dart';
+import 'editable_text.dart';
+import 'keyboard.dart';
+
 typedef void ValueChanged(value);
 
 class Input extends Component {