Run auto-formatter (autopep8) on webkitpy.

third_party/WebKit/Tools/Scripts/webkitpy/style/checkers/common_unittest.py

 # Copyright (C) 2010 Chris Jerdonek (cjerdonek@webkit.org)
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions
 # are met:
 # 1.  Redistributions of source code must retain the above copyright
 #     notice, this list of conditions and the following disclaimer.
 # 2.  Redistributions in binary form must reproduce the above copyright
 #     notice, this list of conditions and the following disclaimer in the
 #     documentation and/or other materials provided with the distribution.
@@ skipping 15 matching lines @@
 
 from common import CarriageReturnChecker
 from common import TabChecker
 
 # FIXME: The unit tests for the cpp, text, and common checkers should
 #        share supporting test code. This can include, for example, the
 #        mock style error handling code and the code to check that all
 #        of a checker's categories are covered by the unit tests.
 #        Such shared code can be located in a shared test file, perhaps
 #        even this file.
+
+
 class CarriageReturnCheckerTest(unittest.TestCase):
 
     """Tests check_no_carriage_return()."""
 
     _category = "whitespace/carriage_return"
     _confidence = 1
     _expected_message = ("One or more unexpected \\r (^M) found; "
                          "better to use only a \\n")
 
     def setUp(self):
-        self._style_errors = [] # The list of accumulated style errors.
+        self._style_errors = []  # The list of accumulated style errors.
 
     def _mock_style_error_handler(self, line_number, category, confidence,
                                   message):
         """Append the error information to the list of style errors."""
         error = (line_number, category, confidence, message)
         self._style_errors.append(error)
 
     def assert_carriage_return(self, input_lines, expected_lines, error_lines):
         """Process the given line and assert that the result is correct."""
         handle_style_error = self._mock_style_error_handler
@@ skipping 55 matching lines @@
         checker.check(input_lines)
         self.assertEqual(self._error_lines, error_lines)
 
     def test_notab(self):
         self.assert_tab([''], [])
         self.assert_tab(['foo', 'bar'], [])
 
     def test_tab(self):
         self.assert_tab(['\tfoo'], [1])
         self.assert_tab(['line1', '\tline2', 'line3\t'], [2, 3])