fix build break for running vm tests.

runtime/tests/vm/testcfg.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 os
 from os.path import join, exists
 
 import test
+from testing import test_runner
 
 class VmTestCase(test.TestCase):
   def __init__(self, path, context, mode, arch, flags):
     super(VmTestCase, self).__init__(context, path)
     self.mode = mode
     self.arch = arch
     self.flags = flags
 
   def IsNegative(self):
     # TODO(kasperl): Figure out how to support negative tests. Maybe
@@ skipping 19 matching lines @@
 
 
 class VmTestConfiguration(test.TestConfiguration):
   def __init__(self, context, root):
     super(VmTestConfiguration, self).__init__(context, root)
 
   def ListTests(self, current_path, path, mode, arch):
     if not arch in ['ia32', 'x64', 'arm', 'simarm']:
       return []
     run_tests = self.context.GetRunTests(mode, arch)
-    output = test.Execute(run_tests + ['--list'], self.context)
+    output = test_runner.Execute(run_tests + ['--list'], self.context)
     if output.exit_code != 0:
       print output.stdout
       print output.stderr
       return [ ]
     tests = [ ]
     for test_line in output.stdout.strip().split('\n'):
       name_and_flags = test_line.split()
       name = name_and_flags[0]
       flags = name_and_flags[1:]
       test_path = current_path + [name]
       if self.Contains(path, test_path):
         tests.append(VmTestCase(test_path, self.context, mode, arch, flags))
     return tests
 
   def GetTestStatus(self, sections, defs):
     status = join(self.root, 'vm.status')
     if exists(status): test.ReadConfigurationInto(status, sections, defs)
 
 
 def GetConfiguration(context, root):
   return VmTestConfiguration(context, root)