[Effen] s/Node/UINode/, s/Element/WrapperNode/, s/EventTarget/EventListenerNode/

sky/framework/components/material.dart

Index: sky/framework/components/material.dart
diff --git a/sky/framework/components/material.dart b/sky/framework/components/material.dart
index 88ba6e30be4a2d4c07b6306606ead7f31fcd0ee5..cac16f546e4d777c30e8e86e744424fba887571d 100644
--- a/sky/framework/components/material.dart
+++ b/sky/framework/components/material.dart
@@ -16,12 +16,12 @@ class Material extends Component {
     new Style('box-shadow: ${Shadow[5]}'),
   ];
 
-  Node content;
+  UINode content;
   int level;
 
   Material({ Object key, this.content, this.level: 0 }) : super(key: key);
 
-  Node build() {
+  UINode build() {
     return new StyleNode(content, _shadowStyle[level]);
   }
 }