[chromeos] pyauto tests should auto login by default on chromeos

chrome/test/functional/chromeos_accessibility.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.
 
 import logging
 import os
 import subprocess
 import sys
 import time
 
 import pyauto_functional
 import pyauto
 
 sys.path.append('/usr/local')  # To make autotest libs importable.
 from autotest.cros import cros_ui
 from autotest.cros import cryptohome
 
 
 class AccessibilityTest(pyauto.PyUITest):
   """Tests for Accessibility.
 
   Test various chromeos functionalities while Accessibility is turned on. 
   """
   find_test_data_dir = 'find_in_page'
 
+  def ShouldAutoLogin(self):
+    return False
+
   def setUp(self):
     # We want a clean session_manager instance for every run,
     # so restart ui now.
     cros_ui.stop(allow_fail=True)
     cryptohome.remove_all_vaults()
     cros_ui.start(wait_for_login_prompt=False)
     pyauto.PyUITest.setUp(self)
 
   def tearDown(self):
     self._DisableSpokenFeedback()
@@ skipping 66 matching lines @@
     # Verify that opened tab page behaves normally when Spoken Feedback is
     # enabled. crosbug.com/26731
     url = self.GetFileURLForDataPath(self.find_test_data_dir, 'largepage.html')
     self.NavigateToURL(url)
     self.assertEqual(373, self.FindInPage('daughter of Prince')['match_count'],
         msg='Failed to load the page or find the page contents.')
 
 
 if __name__ == '__main__':
   pyauto_functional.Main()