Move auto_stub.py from commit-queue

testing_support/trial_dir.py

-#!/usr/bin/env python
 # Copyright (c) 2011 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.
 
 
 import atexit
 import logging
 import os
 import sys
 import tempfile
-import unittest
+
+from testing_support import auto_stub
 
 import gclient_utils
 
 
 class TrialDir(object):
   """Manages a temporary directory.
 
   On first object creation, TrialDir.TRIAL_ROOT will be set to a new temporary
   directory created in /tmp or the equivalent. It will be deleted on process
   exit unless TrialDir.SHOULD_LEAK is set to True.
@@ skipping 49 matching lines @@
     self.trial.set_up()
 
   def tearDown(self):
     self.trial.tear_down()
 
   @property
   def root_dir(self):
     return self.trial.root_dir
 
 
-class TestCase(unittest.TestCase, TrialDirMixIn):
+class TestCase(auto_stub.TestCase, TrialDirMixIn):
   """Base unittest class that cleans off a trial directory in tearDown()."""
   def setUp(self):
-    unittest.TestCase.setUp(self)
+    auto_stub.TestCase.setUp(self)
     TrialDirMixIn.setUp(self)
 
   def tearDown(self):
     TrialDirMixIn.tearDown(self)
-    unittest.TestCase.tearDown(self)
+    auto_stub.TestCase.tearDown(self)
 
 
 if '-l' in sys.argv:
   # See SHOULD_LEAK definition in TrialDir for its purpose.
   TrialDir.SHOULD_LEAK = True
   print 'Leaking!'
   sys.argv.remove('-l')