Chromium Code Reviews| Index: tool/input_sdk/lib/collection/set.dart |
| diff --git a/tool/input_sdk/lib/collection/set.dart b/tool/input_sdk/lib/collection/set.dart |
| index 309355c15fef4249e3cbb6576edfade2a73b876e..4eb330606edef3c57519600671ce1ff33226d38b 100644 |
| --- a/tool/input_sdk/lib/collection/set.dart |
| +++ b/tool/input_sdk/lib/collection/set.dart |
| @@ -33,7 +33,7 @@ abstract class SetMixin<E> implements Set<E> { |
| bool contains(Object element); |
| - E lookup(E element); |
| + E lookup(Object element); |
| bool remove(Object element); |