Migrate block 43.

tests/language_strong/bailout_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";
-
-// Test that a call to a bailout method in dart2js resolves to the
-// right method.
-
-var reachedAfoo = new C();
-
-class A {
-  foo() {
-    // Using '++' makes sure there is a type guard.
-    reachedAfoo++;
-  }
-}
-
-class B extends A {
-  foo() {
-    reachedAfoo++;
-    // Call the Expect method after the type guard.
-    Expect.fail('Should never reach B.foo');
-  }
-
-  bar() {
-    super.foo();
-  }
-}
-
-class C {
-  int value = 0;
-  operator +(val) {
-    value += val;
-    return this;
-  }
-}
-
-main() {
-  // Using a loop makes sure the 'foo' methods will have an optimized
-  // version.
-  while (reachedAfoo.value != 0) {
-    new A().foo();
-    new B().foo();
-  }
-  new B().bar();
-  Expect.equals(1, reachedAfoo.value);
-}