Add type inference of annotations.

pkg/front_end/lib/src/fasta/source/diet_listener.dart

Index: pkg/front_end/lib/src/fasta/source/diet_listener.dart
diff --git a/pkg/front_end/lib/src/fasta/source/diet_listener.dart b/pkg/front_end/lib/src/fasta/source/diet_listener.dart
index ef900d29806d4829d4d0c6f1edb2520bb0564112..adc96322035338edd4ae5cc237d6d1b37d1c5814 100644
--- a/pkg/front_end/lib/src/fasta/source/diet_listener.dart
+++ b/pkg/front_end/lib/src/fasta/source/diet_listener.dart
@@ -466,7 +466,7 @@ class DietListener extends StackListener {
       StackListener listener = createListener(classBuilder, memberScope, false);
       Parser parser = new Parser(listener);
       parser.parseMetadataStar(metadata);
-      List metadataConstants = listener.pop();
+      List metadataConstants = listener.finishMetadata();
       Class cls = classBuilder.target;
       metadataConstants.forEach(cls.addAnnotation);
     }