Remove the |style| parameter from Material

sky/framework/components/floating_action_button.dart

 // 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 '../fn.dart';
+import '../theme/colors.dart';
+import 'ink_well.dart';
 import 'material.dart';
-import '../theme/colors.dart';
 
 class FloatingActionButton extends Component {
   // TODO(abarth): We need a better way to become a container for absolutely
   // positioned elements.
   static final Style _style = new Style('''
     transform: translateX(0);
     width: 56px;
     height: 56px;
     background-color: ${Red[500]};
     border-radius: 28px;'''
@@ skipping 16 matching lines @@
   FloatingActionButton({ Object key, this.content, this.level: 0 })
       : super(key: key);
 
   Node build() {
     List<Node> children = [];
 
     if (content != null)
       children.add(content);
 
     return new Container(
-      key: "Container",
       style: level > 0 ? _style.extend(Material.shadowStyle[level]) : _style,
-      children: [
-        new Material(
-          key: "Clip",
-          style: _clipStyle,
-          children: children
-        )
-      ]
+      children: [new StyleNode(new InkWell(children: children), _clipStyle)]
     );
   }
 }