sdk/lib/html/dartium/html_dartium.dart

Index: sdk/lib/html/dartium/html_dartium.dart
diff --git a/sdk/lib/html/dartium/html_dartium.dart b/sdk/lib/html/dartium/html_dartium.dart
index e3f0611f95ee6cc8685cf271c501776d28f3c797..d43efdef4cf6d857ead3488b4db3d78ea225ccaf 100644
--- a/sdk/lib/html/dartium/html_dartium.dart
+++ b/sdk/lib/html/dartium/html_dartium.dart
@@ -30560,9 +30560,9 @@ class _WrappedList<E> extends ListBase<E> {
 
   void sort([int compare(E a, E b)]) { _list.sort(compare); }
 
-  int indexOf(E element, [int start = 0]) => _list.indexOf(element, start);
+  int indexOf(Object element, [int start = 0]) => _list.indexOf(element, start);
 
-  int lastIndexOf(E element, [int start]) => _list.lastIndexOf(element, start);
+  int lastIndexOf(Object element, [int start]) => _list.lastIndexOf(element, start);
 
   void insert(int index, E element) => _list.insert(index, element);