Migrate block 116.

tests/language/if_and_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";
-
-// The "if (negative) res2 |= 3" below can be emitted as negative && (res2 |= 3)
-// in JavaScript. Dart2js produced the wrong output.
-
-_shiftRight(x, y) => x;
-int64_bits(x) => x;
-
-class A {
-  opshr(int n, a2) {
-    int res2;
-    bool negative = a2 == 496;
-
-    res2 = _shiftRight(a2, n);
-    if (negative) {
-      res2 |= 3;
-    }
-    return int64_bits(res2);
-  }
-}
-
-main() {
-  var a = new A();
-  var t;
-  for (int i = 0; i < 3; i++) {
-    t = a.opshr(99, 496);
-  }
-  Expect.equals(499, t);
-}