Migrate block 43.

tests/language_strong/bailout4_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 dart2s computes the right bailout environment in presence
-// of nested loops.
-
-class A {
-  operator [](index) => 42;
-}
-
-var a = new A();
-var b = new List<dynamic>(4);
-int count = 0;
-
-main() {
-  // Make the method recursive to make sure it gets an optimized
-  // version.
-  if (b[0] != null) main();
-
-  for (int i = 0; i < 2; i++) {
-    for (int j = 0; j < 2; j++) {
-      for (int k = 0; k < 2; k++) {
-        Expect.equals(42, a[i + j + k]);
-        count++;
-      }
-    }
-  }
-  Expect.equals(8, count);
-}