[chromedriver] Fix error in pyauto bots run.

The python unittest failed to run setUpClass/tearDownClass because of python version is 2.6 in pyauto bots. This CL makes a workaround to fix this issue.

NOTRY=true

Review URL: https://chromiumcodereview.appspot.com/11830030

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@175879 0039d316-1c4b-4281-b951-d872f2087c98

chrome/test/chromedriver/run_py_tests.py

@@ -24,13 +24,14 @@ 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):
@@ -117,5 +118,7 @@ if __name__ == '__main__':
   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))