Migrate block 114 (and some of 113).

tests/language_strong/generic_instanceof4_test.dart

-// Copyright (c) 2014, 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 that instanceof works correctly with type variables.
-
-import "package:expect/expect.dart";
-
-class A<T> {
-  foo(x) {
-    // Don't inline.
-    if (new DateTime.now().millisecondsSinceEpoch == 42) return foo(x);
-    return x is T;
-  }
-}
-
-class BB {}
-
-class B<T> implements BB {
-  foo() {
-    // Don't inline.
-    if (new DateTime.now().millisecondsSinceEpoch == 42) return foo();
-    return new A<T>().foo(new B());
-  }
-}
-
-main() {
-  Expect.isTrue(new B<BB>().foo());
-}