Remove unnecessary pass statements.

third_party/WebKit/Tools/Scripts/webkitpy/layout_tests/port/win.py

 # Copyright (C) 2010 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 107 matching lines @@
             _winreg.CloseKey(hkey)
 
             # In order to keep multiple checkouts from stepping on each other, we simply check that an
             # existing entry points to a valid path and has the right command line.
             if len(args) == 2 and self._filesystem.exists(args[0]) and args[0].endswith('perl.exe') and args[1] == '-wT':
                 return True
         except WindowsError as e:
             if e.errno != errno.ENOENT:
                 raise e
             # The key simply probably doesn't exist.
-            pass
 
         # Note that we write to HKCU so that we don't need privileged access
         # to the registry, and that will get reflected in HKCR when it is read, above.
         cmdline = self.path_from_chromium_base('third_party', 'perl', 'perl', 'bin', 'perl.exe') + ' -wT'
         hkey = _winreg.CreateKeyEx(_winreg.HKEY_CURRENT_USER, 'Software\\Classes\\' + sub_key, 0, _winreg.KEY_WRITE)
         _winreg.SetValue(hkey, '', _winreg.REG_SZ, cmdline)
         _winreg.CloseKey(hkey)
         return True
 
     def setup_test_run(self):
@@ skipping 102 matching lines @@
         return result
 
     def look_for_new_crash_logs(self, crashed_processes, start_time):
         if self.get_option('disable_breakpad'):
             return None
         return self._dump_reader.look_for_new_crash_logs(crashed_processes, start_time)
 
     def clobber_old_port_specific_results(self):
         if not self.get_option('disable_breakpad'):
             self._dump_reader.clobber_old_results()