Remove the |style| parameter from Material

sky/framework/components/drawer.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 'animated_component.dart';
 import '../animation/animated_value.dart';
 import '../animation/curves.dart';
 import '../fn.dart';
 import '../theme/colors.dart';
 import '../theme/shadows.dart';
@@ skipping 116 matching lines @@
     var mask = new EventTarget(
       new Container(
         key: 'Mask',
         style: _maskStyle,
         inlineStyle: maskInlineStyle
       ),
       onGestureTap: controller.handleMaskTap,
       onGestureFlingStart: controller.handleFlingStart
     );
 
-    Material content = new Material(
-      key: 'Content',
-      style: _contentStyle,
-      inlineStyle: contentInlineStyle,
-      children: children,
-      level: level
-    );
+    Node content = new StyleNode(
+      new Material(
+        key: 'Content',
+        inlineStyle: contentInlineStyle,
+        children: children,
+        level: level),
+      _contentStyle);
 
     return new EventTarget(
       new Container(
         style: _style,
         inlineStyle: inlineStyle,
         children: [ mask, content ]
       ),
       onPointerDown: controller.handlePointerDown,
       onPointerMove: controller.handlePointerMove,
       onPointerUp: controller.handlePointerUp,
       onPointerCancel: controller.handlePointerCancel
     );
   }
 }