Move example fn widgets into sky/framework/components

sky/examples/fn/widgets/menuitem.dart

Index: sky/examples/fn/widgets/menuitem.dart
diff --git a/sky/examples/fn/widgets/menuitem.dart b/sky/examples/fn/widgets/menuitem.dart
deleted file mode 100644
index 85f8d506671ce375b2f25e75c0d395d328e16249..0000000000000000000000000000000000000000
--- a/sky/examples/fn/widgets/menuitem.dart
+++ /dev/null
@@ -1,55 +0,0 @@
-part of widgets;
-
-class MenuItem extends ButtonBase {
-
-  static Style _style = new Style('''
-    transform: translateX(0);
-    display: flex;
-    align-items: center;
-    height: 48px;
-    -webkit-user-select: none;'''
-  );
-
-  static Style _highlightStyle = new Style('''
-    transform: translateX(0);
-    display: flex;
-    align-items: center;
-    height: 48px;
-    background: rgba(153, 153, 153, 0.4);
-    -webkit-user-select: none;'''
-  );
-
-  static Style _iconStyle = new Style('''
-    padding: 0px 16px;'''
-  );
-
-  static Style _labelStyle = new Style('''
-      font-family: 'Roboto Medium', 'Helvetica';
-      color: #212121;
-      padding: 0px 16px;
-      flex: 1;'''
-  );
-
-  List<Node> children;
-  String icon;
-
-  MenuItem({ Object key, this.icon, this.children }) : super(key: key);
-
-  Node build() {
-    return new Container(
-      style: _highlight ? _highlightStyle : _style,
-      children: [
-        super.build(),
-        new Icon(
-          style: _iconStyle,
-          size: 24,
-          type: "${icon}_grey600"
-        ),
-        new Container(
-          style: _labelStyle,
-          children: children
-        )
-      ]
-    );
-  }
-}