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

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

Index: sky/sdk/lib/framework/components2/menu_item.dart
diff --git a/sky/sdk/lib/framework/components2/menu_item.dart b/sky/sdk/lib/framework/components2/menu_item.dart
deleted file mode 100644
index 4f4bd79a73893249352b8b3a3237040ad45ae0df..0000000000000000000000000000000000000000
--- a/sky/sdk/lib/framework/components2/menu_item.dart
+++ /dev/null
@@ -1,62 +0,0 @@
-// Copyright 2015 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-import '../fn2.dart';
-import 'button_base.dart';
-import 'icon.dart';
-import 'ink_well.dart';
-
-const BoxDecoration _kHighlightDecoration = const BoxDecoration(
-  backgroundColor: const Color.fromARGB(102, 153, 153, 153)
-);
-
-// TODO(abarth): We shouldn't need _kHighlightBoring, but currently Container
-//               isn't smart enough to retain the components it builds when we
-//               add or remove a |decoration|. For now, we use a transparent
-//               decoration to avoid changing the structure of the tree. The
-//               right fix, however, is to make Container smarter about how it
-//               syncs its subcomponents.
-const BoxDecoration _kHighlightBoring = const BoxDecoration(
-  backgroundColor: const Color.fromARGB(0, 0, 0, 0)
-);
-
-class MenuItem extends ButtonBase {
-  MenuItem({ Object key, this.icon, this.children, this.onGestureTap }) : super(key: key);
-
-  String icon;
-  List<UINode> children;
-  GestureEventListener onGestureTap;
-
-  void syncFields(MenuItem source) {
-    icon = source.icon;
-    children = source.children;
-    onGestureTap = source.onGestureTap;
-    super.syncFields(source);
-  }
-
-  UINode buildContent() {
-    return new EventListenerNode(
-      new Container(
-        child: new InkWell(
-          children: [
-            new Padding(
-              child: new Icon(type: "${icon}_grey600", size: 24),
-              padding: const EdgeDims.symmetric(horizontal: 16.0)
-            ),
-            new FlexExpandingChild(
-              new Padding(
-                child: new Flex(children, direction: FlexDirection.horizontal),
-                padding: const EdgeDims.symmetric(horizontal: 16.0)
-              ),
-              flex: 1
-            )
-          ]
-        ),
-        height: 48.0,
-        decoration: highlight ? _kHighlightDecoration : _kHighlightBoring
-      ),
-      onGestureTap: onGestureTap
-    );
-  }
-}