Run format-webkit on webkitpy code (without string conversion).

third_party/WebKit/Tools/Scripts/webkitpy/tool/multicommandtool.py

 # Copyright (c) 2009 Google Inc. All rights reserved.
 # Copyright (c) 2009 Apple 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
@@ skipping 88 matching lines @@
         command = args[command_index]
         return (command, args[:command_index] + args[command_index + 1:])
 
     def command_by_name(self, command_name):
         for command in self.commands:
             if command_name == command.name:
                 return command
         return None
 
     def path(self):
-        raise NotImplementedError, "subclasses must implement"
+        raise NotImplementedError("subclasses must implement")
 
     def command_completed(self):
         pass
 
     def should_show_in_main_help(self, command):
         return command.show_in_main_help
 
     def should_execute_command(self, command):
         return True
 
@@ skipping 21 matching lines @@
 
         (should_execute, failure_reason) = self.should_execute_command(command)
         if not should_execute:
             _log.error(failure_reason)
             return 0  # FIXME: Should this really be 0?
 
         while True:
             try:
                 result = command.check_arguments_and_execute(options, args, self)
                 break
-            except TryAgain, e:
+            except TryAgain as e:
                 pass
 
         self.command_completed()
         return result