More tests updated to optimize code (Part 2).

tests/language/double_modulo_test.dart

Index: tests/language/double_modulo_test.dart
===================================================================
--- tests/language/double_modulo_test.dart	(revision 24922)
+++ tests/language/double_modulo_test.dart	(working copy)
@@ -2,6 +2,7 @@
 // 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.
 // Dart test optimization of modulo operator on Double.
+// VMOptions=--optimization-counter-threshold=10
 
 import "package:expect/expect.dart";
 
@@ -9,7 +10,7 @@
   double k = -0.33333;
   double firstResPos = doMod(k, 1.0);
   double firstResNeg = doMod(k, -1.0);
-  for (int i = 0; i < 5000; i++) {
+  for (int i = 0; i < 20; i++) {
     Expect.equals(firstResPos, doMod(k, 1.0));
     Expect.equals(firstResNeg, doMod(k, -1.0));
   }