Add the ability to run tests with several sets of VM flags

tools/testing/test_case.py

 # Copyright (c) 2011, 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.
 
 import atexit
 import fileinput
 import os
 import test
 import platform
 import re
 import sys
 import tempfile
 
 import architecture
 import test
 import utils
 
 from os.path import join, exists, basename
 
 import utils
 
 class Error(Exception):
   pass
 
 
 class StandardTestCase(test.TestCase):
-  def __init__(self, context, path, filename, mode, arch):
+  def __init__(self, context, path, filename, mode, arch, vm_options = None):
     super(StandardTestCase, self).__init__(context, path)
     self.filename = filename
     self.mode = mode
     self.arch = arch
     self.run_arch = architecture.GetArchitecture(self.arch, self.mode,
                                                  self.filename)
     for flag in context.flags:
       self.run_arch.vm_options.append(flag)
 
+    if vm_options:
+      for vm_option in vm_options:
+        if (len(vm_option) > 0):
+          self.run_arch.vm_options.append(vm_option)
+
   def IsNegative(self):
     return self.GetName().endswith("NegativeTest")
 
   def GetLabel(self):
     return "%s%s %s" % (self.mode, self.arch, '/'.join(self.path))
 
   def GetCommand(self):
     return self.run_arch.GetRunCommand();
 
   def GetName(self):
@@ skipping 86 matching lines @@
     cmd += ['-check-only',
             '-fatal-type-errors',
             '-Werror',
             '-out', self.temp_dir,
             self.filename]
 
     return cmd
 
   def GetName(self):
     return self.path[-1]