Support for type dynamic in VM

tests/language/instanceof3_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.
 // Dart test program for testing the instanceof operation.
 
 // In the type test 'e is T', it is a run-time error if T does not denote a type
 // available in the current lexical scope.
 
 isCheckedMode() {
   try {
@@ skipping 47 matching lines @@
     } on TypeError catch (error) {
       got_type_error = true;
     }
     // Type error in checked mode only.
     Expect.isTrue(got_type_error == isCheckedMode());
   }
   {
     bool got_type_error = false;
     var x = new List();
     try {
-      Expect.isTrue(x is List<UndeclaredType>);  // x is a List<Dynamic>.
+      Expect.isTrue(x is List<UndeclaredType>);  // x is a List<dynamic>.
     } on TypeError catch (error) {
       got_type_error = true;
     }
     // Type error in checked mode only.
     Expect.isTrue(got_type_error == isCheckedMode());
   }
   {
     bool got_type_error = false;
     var x = new List<int>();
     try {
       Expect.isTrue(x is List<UndeclaredType>);  // x is a List<int>.
     } on TypeError catch (error) {
       got_type_error = true;
     }
     // Type error in checked mode only.
     Expect.isTrue(got_type_error == isCheckedMode());
   }
 }
 
 main() {
   // Repeat type checks so that inlined tests can be tested as well.
   for (int i = 0; i < 5; i++) {
     testAll();
   }
 }