Run auto-formatter (autopep8) on webkitpy.

third_party/WebKit/Tools/Scripts/webkitpy/common/system/stack_utils_unittest.py

 # Copyright (C) 2011 Google Inc. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 # copyright notice, this list of conditions and the following disclaimer
@@ skipping 21 matching lines @@
 from webkitpy.common.system import outputcapture
 from webkitpy.common.system import stack_utils
 
 
 def current_thread_id():
     thread_id, _ = sys._current_frames().items()[0]
     return thread_id
 
 
 class StackUtilsTest(unittest.TestCase):
+
     def test_find_thread_stack_found(self):
         thread_id = current_thread_id()
         found_stack = stack_utils._find_thread_stack(thread_id)
         self.assertIsNotNone(found_stack)
 
     def test_find_thread_stack_not_found(self):
         found_stack = stack_utils._find_thread_stack(0)
         self.assertIsNone(found_stack)
 
     def test_log_thread_state(self):
@@ skipping 11 matching lines @@
         msgs = []
 
         def logger(msg):
             msgs.append(msg)
 
         try:
             raise ValueError
         except:
             stack_utils.log_traceback(logger, sys.exc_info()[2])
         self.assertTrue(msgs)