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

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

Index: sky/sdk/lib/framework/components2/popup_menu_item.dart
diff --git a/sky/sdk/lib/framework/components2/popup_menu_item.dart b/sky/sdk/lib/framework/components2/popup_menu_item.dart
deleted file mode 100644
index 78bb37f47bdc1f064a6f89d321c8f78258dfbd60..0000000000000000000000000000000000000000
--- a/sky/sdk/lib/framework/components2/popup_menu_item.dart
+++ /dev/null
@@ -1,26 +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 'ink_well.dart';
-
-class PopupMenuItem extends Component {
-  PopupMenuItem({ Object key, this.children, this.opacity}) : super(key: key);
-
-  final List<UINode> children;
-  final double opacity;
-
-  UINode build() {
-    return new Opacity(
-      opacity: opacity,
-      child: new InkWell(
-        children: [new Container(
-          constraints: const BoxConstraints(minWidth: 112.0),
-          padding: const EdgeDims.all(16.0),
-          child: new Flex(children)
-        )]
-      )
-    );
-  }
-}