Migrate first block of tests in standalone to standalone_2

tests/standalone/double_to_int_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.
-//
-// Tests optimization: transform double.toInt() to DoubleToSmi
-// unless we encounter a non-Smi result, in which case we deoptimize and
-// optimize it later to DoubleToInt.
-
-import "package:expect/expect.dart";
-
-main() {
-  for (int i = 0; i < 600; i++) {
-    Expect.equals(100, foo(100, 1.2));
-  }
-  // Deoptimize 'foo', d2smi -> d2int.
-  Expect.equals(36507222016 * 2, foo(2, 36507222016.6));
-  for (int i = 0; i < 600; i++) {
-    Expect.equals(100, foo(100, 1.2));
-  }
-  Expect.equals(36507222016 * 2, foo(2, 36507222016.6));
-}
-
-foo(n, a) {
-  int k = 0;
-  for (int i = 0; i < n; i++) {
-    k += goo(a);
-  }
-  return k;
-}
-
-goo(a) {
-  return a.toInt();
-}