Add VMOptions to optimize tests that need to be (Part I).

tests/language/branch_canonicalization_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.
 
 // Test that branch fusion correctly sets branch environment for comparisons
 // that require unboxing and does not fuse branches that can deoptimize.
+// VMOptions=--optimization-counter-threshold=10 --no-use-osr
 
 import "package:expect/expect.dart";
 
 var sideEffect = true;
 
 barDouble(a, b) {
   sideEffect = false;
   final result = (a == b);
   sideEffect = !sideEffect;
   return result;
@@ skipping 24 matching lines @@
   sideEffect = !sideEffect;
   return result;
 }
 
 fooPoly(a, b) => barPoly(a, b) ? 1 : 0;
 
 main () {
   final a = 1.0;
   final b = 1 << 62;
   final x = new A(), y = new B(), z = new C();
-  for (var i = 0; i < 10000; i++) {
+  for (var i = 0; i < 20; i++) {
     Expect.equals(1, fooDouble(a, a));
     Expect.isTrue(sideEffect);
     Expect.equals(0, fooMint(b, 0));
     Expect.isTrue(sideEffect);
     Expect.equals(1, fooPoly(x, x));
     Expect.equals(0, fooPoly(y, x));
   }
   Expect.equals(1, fooDouble(z, z));
   Expect.isTrue(sideEffect);
   Expect.equals(1, fooMint(z, z));
   Expect.isTrue(sideEffect);
   Expect.equals(1, fooPoly(z, z));
   Expect.isTrue(sideEffect);
 }