Run dummy compiler test with --print-object-histogramy on the vm

tests/utils/dummy_compiler_test.dart

Index: tests/utils/dummy_compiler_test.dart
===================================================================
--- tests/utils/dummy_compiler_test.dart	(revision 23949)
+++ tests/utils/dummy_compiler_test.dart	(working copy)
@@ -1,6 +1,8 @@
 // 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.
+// VMOptions=
+// VMOptions=--print-object-histogram
 
 // Smoke test of the dart2js compiler API.
 library dummy_compiler;