Migrate block 163 to Dart 2.0.

tests/language/value_range_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";
-
-int inscrutable(int x) => x == 0 ? 0 : x | inscrutable(x & (x - 1));
-
-foo() {
-  var x = 0x102;
-  if (inscrutable(x) == 0) x = 0x0;
-  if (inscrutable(10) == 10) x = 0x10; // x is in range [0 .. 0x102].
-  x = x & 0xFF; // x should be in range [0 .. 0xFF]. Actual value: 0x10.
-  var a = const [1, 2, 3];
-  return a[x];
-}
-
-main() {
-  Expect.throws(() => foo(), (e) => e is RangeError);
-}