Reformat webkitpy.layout_tests w/ format-webkitpy.

Tools/Scripts/webkitpy/layout_tests/breakpad/dump_reader_win.py

 # Copyright (C) 2013 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 19 matching lines @@
 import os
 import shlex
 
 from webkitpy.layout_tests.breakpad.dump_reader import DumpReader
 
 
 _log = logging.getLogger(__name__)
 
 
 class DumpReaderWin(DumpReader):
+
     """DumpReader for windows breakpad."""
 
     def __init__(self, host, build_dir):
         super(DumpReaderWin, self).__init__(host, build_dir)
         self._cdb_available = None
 
     def check_is_functional(self):
         return self._check_cdb_available()
 
     def _file_extension(self):
@@ skipping 18 matching lines @@
         return None
 
     def _find_depot_tools_path(self):
         """Attempt to find depot_tools location in PATH."""
         for i in os.environ['PATH'].split(os.pathsep):
             if os.path.isfile(os.path.join(i, 'gclient')):
                 return i
 
     def _check_cdb_available(self):
         """Checks whether we can use cdb to symbolize minidumps."""
-        if self._cdb_available != None:
+        if self._cdb_available is not None:
             return self._cdb_available
 
         CDB_LOCATION_TEMPLATES = [
             '%s\\Debugging Tools For Windows',
             '%s\\Debugging Tools For Windows (x86)',
             '%s\\Debugging Tools For Windows (x64)',
             '%s\\Windows Kits\\8.0\\Debuggers\\x86',
             '%s\\Windows Kits\\8.0\\Debuggers\\x64',
             '%s\\Windows Kits\\8.1\\Debuggers\\x86',
             '%s\\Windows Kits\\8.1\\Debuggers\\x64',
@@ skipping 38 matching lines @@
                 pass
             else:
                 self._cdb_path = cdb
                 self._cdb_available = True
                 return self._cdb_available
 
         _log.warning("CDB is not installed; can't symbolize minidumps.")
         _log.warning('')
         self._cdb_available = False
         return self._cdb_available