Complete implementation of bounds checking in the vm, by introducing a vm object

tests/language/type_variable_bounds3_test.dart

Index: tests/language/type_variable_bounds3_test.dart
===================================================================
--- tests/language/type_variable_bounds3_test.dart	(revision 0)
+++ tests/language/type_variable_bounds3_test.dart	(revision 0)
@@ -0,0 +1,19 @@
+// Copyright (c) 2013, 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.
+
+// Test of parameterized types with invalid bounds.
+
+class A<K extends int> {
+}
+
+class B<X, Y> {
+  foo(x) {
+    return x is A<X>;  /// 00: dynamic type error
+  }
+}
+
+main() {
+  var b = new B<double, double>();
+  b.foo(new A());
+}