Migrate block 115.

tests/language_2/getter_setter_interceptor_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";
 
 class A {
   int length = 0;
 }
 
@@ skipping 18 matching lines @@
   Expect.equals(3, b.foo(c));
   Expect.equals(5, b.bar(c));
   Expect.equals(5, c.length);
 
   Expect.equals(0, b.foo(a));
   Expect.equals(2, b.bar(a));
   Expect.equals(2, a.length);
 
   Expect.equals(4, b.length);
 }