Migrated test block 13 to Dart 2.0.

tests/corelib/list_contains_argument_order_test.dart

-// 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.
-
-import "package:expect/expect.dart";
-
-class A {
-  const A();
-  bool operator ==(Object other) {
-    return false;
-  }
-}
-
-class B {
-  bool operator ==(Object other) {
-    Expect.fail("Bad equality order.");
-  }
-}
-
-main() {
-  test(iterable) {
-    Expect.isFalse(iterable.contains(new B()));
-  }
-
-  var iterables = [
-    <A>[new A()],
-    new List<A>(1)..[0] = new A(),
-    new List<A>()..add(new A()),
-    const <A>[const A()],
-    new Set()..add(new A()),
-    (new Map()..[new A()] = 0).keys,
-    (new Map()..[0] = new A()).values
-  ];
-
-  for (var iterable in iterables) {
-    test(iterable);
-    test(iterable.map((x) => x));
-    test(iterable.take(1));
-  }
-}