sdk/lib/html/dart2js/html_dart2js.dart

Index: sdk/lib/html/dart2js/html_dart2js.dart
diff --git a/sdk/lib/html/dart2js/html_dart2js.dart b/sdk/lib/html/dart2js/html_dart2js.dart
index 71f7cce8748de47a99dc60ce222d900cd504c501..ed06eff9a16b1fd93aa5a965a42486dd68721d51 100644
--- a/sdk/lib/html/dart2js/html_dart2js.dart
+++ b/sdk/lib/html/dart2js/html_dart2js.dart
@@ -8686,20 +8686,20 @@ abstract class Element extends Node implements ElementTraversal native "*Element
    *
    * Would be accessed in Dart as:
    *
-   *     var value = element.dataAttributes['myRandomValue'];
+   *     var value = element.dataset['myRandomValue'];
    *
    * See also:
    *
    * * [Custom data attributes](http://www.w3.org/TR/html5/global-attributes.html#custom-data-attribute)
    */
-  Map<String, String> get dataAttributes =>
+  Map<String, String> get dataset =>
     new _DataAttributeMap(attributes);
 
-  void set dataAttributes(Map<String, String> value) {
-    final dataAttributes = this.dataAttributes;
-    dataAttributes.clear();
+  void set dataset(Map<String, String> value) {
+    final data = this.dataset;
+    data.clear();
     for (String key in value.keys) {
-      dataAttributes[key] = value[key];
+      data[key] = value[key];
     }
   }
 
@@ -9261,10 +9261,6 @@ abstract class Element extends Node implements ElementTraversal native "*Element
   @DocsEditable
   final int clientWidth;
 
-  @DomName('Element.dataset')
-  @DocsEditable
-  final Map<String, String> dataset;
-
   @JSName('firstElementChild')
   @DomName('Element.firstElementChild')
   @DocsEditable