Index: sdk/lib/_internal/compiler/implementation/util/link.dart |
diff --git a/sdk/lib/_internal/compiler/implementation/util/link.dart b/sdk/lib/_internal/compiler/implementation/util/link.dart |
index b4ad7daf39bff359c31b30a8041e118d2f7038b6..fe8ac305d8b64b03b1dfc19a08812a71259ec1d8 100644 |
--- a/sdk/lib/_internal/compiler/implementation/util/link.dart |
+++ b/sdk/lib/_internal/compiler/implementation/util/link.dart |
@@ -59,8 +59,8 @@ class Link<T> implements Iterable<T> { |
String toString() => "[]"; |
} |
-interface LinkBuilder<T> default LinkBuilderImplementation<T> { |
- LinkBuilder(); |
+abstract class LinkBuilder<T> { |
+ factory LinkBuilder() = LinkBuilderImplementation; |
Link<T> toLink(); |
void addLast(T t); |