[chromedriver]Fix error in pyauto bots run.

chrome/test/chromedriver/run_py_tests.py

 #!/usr/bin/env python
 # Copyright (c) 2012 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.
 
 """End to end tests for ChromeDriver."""
 
 import ctypes
 import optparse
 import os
 import sys
 import unittest
 
 import chromedriver
 import webserver
 
 _THIS_DIR = os.path.abspath(os.path.dirname(__file__))
 sys.path.insert(0, os.path.join(_THIS_DIR, os.pardir, 'pylib'))
 
 from common import chrome_paths
 from common import unittest_util
 
 
 class ChromeDriverTest(unittest.TestCase):
   """End to end tests for ChromeDriver."""
 
-  @classmethod
-  def setUpClass(cls):
-    cls._http_server = webserver.WebServer(chrome_paths.GetTestData())
+  @staticmethod
+  def GlobalSetUp():
+    ChromeDriverTest._http_server = webserver.WebServer(
+        chrome_paths.GetTestData())
 
-  @classmethod
-  def tearDownClass(cls):
-    cls._http_server.Shutdown()
+  @staticmethod
+  def GlobalTearDown():
+    ChromeDriverTest._http_server.Shutdown()
 
   @staticmethod
   def GetHttpUrlForFile(file_path):
     return ChromeDriverTest._http_server.GetUrl() + file_path
 
   def setUp(self):
     self._driver = chromedriver.ChromeDriver(_CHROMEDRIVER_LIB, _CHROME_BINARY)
 
   def tearDown(self):
     self._driver.Quit()
@@ skipping 66 matching lines @@
   _CHROMEDRIVER_LIB = os.path.abspath(options.chromedriver)
   global _CHROME_BINARY
   if options.chrome is not None:
     _CHROME_BINARY = os.path.abspath(options.chrome)
   else:
     _CHROME_BINARY = None
 
   all_tests_suite = unittest.defaultTestLoader.loadTestsFromModule(
       sys.modules[__name__])
   tests = unittest_util.FilterTestSuite(all_tests_suite, options.filter)
+  ChromeDriverTest.GlobalSetUp();
   result = unittest.TextTestRunner().run(tests)
+  ChromeDriverTest.GlobalTearDown();
   sys.exit(len(result.failures) + len(result.errors))