Index: tests/compiler/dart2js/unparser2_test.dart |
diff --git a/tests/compiler/dart2js/unparser2_test.dart b/tests/compiler/dart2js/unparser2_test.dart |
index a4a8aed5e0687f17d97f80db110572e28ac08952..09c713db9d99fd634051a301d3da39ab87c8e436 100644 |
--- a/tests/compiler/dart2js/unparser2_test.dart |
+++ b/tests/compiler/dart2js/unparser2_test.dart |
@@ -99,7 +99,7 @@ String doUnparse(String source) { |
return unparse(node); |
} |
-class MessageCollector implements DiagnosticListener { |
+class MessageCollector extends DiagnosticListener { |
List<String> messages; |
MessageCollector() { |
messages = []; |