annotated_run: extract robust_tempdir so it can be shared with kitchen_run

scripts/slave/unittests/annotated_run_test.py

 #!/usr/bin/env python
 
 # Copyright 2015 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Tests that the tools/build annotated_run wrapper actually runs."""
 
 import collections
 import contextlib
 import json
 import logging
 import os
 import subprocess
 import sys
 import tempfile
 import unittest
 
 import test_env  # pylint: disable=W0403,W0611
 
 import mock
 from common import chromium_utils
 from common import env
 from slave import annotated_run
 from slave import gce
 from slave import infra_platform
+from slave import robust_tempdir
 from slave import update_scripts
 
 BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
 
 
 MockOptions = collections.namedtuple('MockOptions',
     ('dry_run', 'logdog_force', 'logdog_butler_path', 'logdog_annotee_path',
      'logdog_verbose', 'logdog_service_account_json', 'logdog_pubsub_topic',
      'logdog_host'))
 
@@ skipping 48 matching lines @@
     self.maxDiff = None
     self._patchers = []
     map(self._patch, (
         mock.patch('slave.annotated_run._run_command'),
         mock.patch('slave.infra_platform.get'),
         mock.patch('os.path.exists'),
         mock.patch('os.getcwd'),
         mock.patch('os.environ', {}),
         ))
 
-    self.rt = annotated_run.Runtime()
+    self.rt = robust_tempdir.RobustTempdir(prefix='annotated_run_test')
     self.basedir = self.rt.tempdir()
     self.tdir = self.rt.tempdir()
     self.opts = MockOptions(
         dry_run=False,
         logdog_force=False,
         logdog_annotee_path=None,
         logdog_butler_path=None,
         logdog_verbose=False,
         logdog_service_account_json=None,
         logdog_pubsub_topic=None,
@@ skipping 285 matching lines @@
 
   def test_will_not_bootstrap_if_recursive(self):
     os.environ['LOGDOG_STREAM_PREFIX'] = 'foo'
     self.assertRaises(annotated_run.LogDogNotBootstrapped,
         annotated_run._logdog_bootstrap, self.rt, self.opts, self.basedir,
         self.tdir, self._config(), self.properties, [])
 
 
 if __name__ == '__main__':
   unittest.main()