fix #30030, fix #27327 - fix tearoffs and various Object member bugs

tests/language_strong/runtime_type_test.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 import "package:expect/expect.dart";
 
 class A {}
 
 class B {}
 
@@ skipping 15 matching lines @@
 
   Expect.isTrue(classA.runtimeType is Type);
   Expect.isTrue(classA.runtimeType == classB.runtimeType);
   Expect.isFalse(classA.runtimeType == a.runtimeType);
   Expect.isFalse(classA.runtimeType == f.runtimeType);
 
   Expect.isTrue(funcType.runtimeType == classA.runtimeType);
 
   Expect.isTrue(null.runtimeType is Type);
   Expect.equals(Null, null.runtimeType);
+
+  Expect.equals([].runtimeType.toString(), 'List');
+  Expect.equals((<int>[]).runtimeType.toString(), 'List<int>');
 }