Retain abstract classes.

dart/tests/lib/mirrors/return_type_test.dart

Index: dart/tests/lib/mirrors/return_type_test.dart
diff --git a/dart/tests/lib/mirrors/return_type_test.dart b/dart/tests/lib/mirrors/return_type_test.dart
index db4ad768d989c139de77d4480ee36eb9d4ff55b9..ebc208ad552c0c3cdac5196e6ba92ab6e054be86 100644
--- a/dart/tests/lib/mirrors/return_type_test.dart
+++ b/dart/tests/lib/mirrors/return_type_test.dart
@@ -34,9 +34,9 @@ main() {
   var i = methods[const Symbol('i')];
 
   expect('Type(s(dynamic), top-level)', f.returnType);
-  expect('Type(s(int) in s(dart.core), top-level)', g.returnType);
-  expect('Type(s(List) in s(dart.core), top-level)', h.returnType);
-  expect('Type(s(B) in s(test.return_type_test), top-level)', i.returnType);
+  expect('Class(s(int) in s(dart.core), top-level)', g.returnType);
+  expect('Class(s(List) in s(dart.core), top-level)', h.returnType);
+  expect('Class(s(B) in s(test.return_type_test), top-level)', i.returnType);
 
   print(methods);
 }