Migrate the language tests up to arithmetic_test.

tests/language_strong/arithmetic_canonicalization_test.dart

Index: tests/language_strong/arithmetic_canonicalization_test.dart
diff --git a/tests/language_strong/arithmetic_canonicalization_test.dart b/tests/language_strong/arithmetic_canonicalization_test.dart
deleted file mode 100644
index 04a9a12a6b8c5b06b6a69c536e6d1fb2b93d60cc..0000000000000000000000000000000000000000
--- a/tests/language_strong/arithmetic_canonicalization_test.dart
+++ /dev/null
@@ -1,39 +0,0 @@
-// 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.
-// Test canonicalization of simple arithmetic equivalences.
-// VMOptions=--optimization-counter-threshold=20 --no-use-osr
-
-import "package:expect/expect.dart";
-
-main() {
-  for (var i = 0; i < 50; i++) {
-    Expect.isTrue(mul1double(i) is double);
-    Expect.equals(i.toDouble(), mul1double(i));
-    Expect.equals(0.0, mul0double(i));
-    Expect.equals(i.toDouble(), add0double(i));
-
-    Expect.equals(i, mul1int(i));
-    Expect.equals(i, add0int(i));
-    Expect.equals(0, mul0int(i));
-    Expect.equals(0, and0(i));
-    Expect.equals(i, and1(i));
-    Expect.equals(i, or0(i));
-    Expect.equals(i, xor0(i));
-  }
-
-  Expect.isTrue(mul0double(double.NAN).isNaN);
-  Expect.isFalse(add0double(-0.0).isNegative);
-}
-
-mul1double(x) => 1.0 * x;
-mul0double(x) => 0.0 * x;
-add0double(x) => 0.0 + x;
-
-mul1int(x) => 1 * x;
-mul0int(x) => 0 * x;
-add0int(x) => 0 + x;
-and0(x) => 0 & x;
-or0(x) => 0 | x;
-xor0(x) => 0 ^ x;
-and1(x) => (-1) & x;