Fix many* python scripts in src/

chrome_frame/tools/helper_shutdown.py

-# Copyright (c) 2010 The Chromium Authors. All rights reserved.
+#!/usr/bin/env python
+# Copyright (c) 2011 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
-'''This is a simple helper script to shut down the Chrome Frame helper process.
-It needs the Python Win32 extensions.'''
+"""This is a simple helper script to shut down the Chrome Frame helper process.
+
+Requires Python Win32 extensions.
+"""
 
 import pywintypes
 import sys
 import win32gui
 import win32con
 
+
 def main():
   exit_code = 0
   window = win32gui.FindWindow('ChromeFrameHelperWindowClass',
                                'ChromeFrameHelperWindowName')
   if not window:
     print 'Chrome Frame helper process not running.'
   else:
     try:
       win32gui.PostMessage(window, win32con.WM_CLOSE, 0, 0)
       print 'Chrome Frame helper process shut down.'
     except pywintypes.error as ex:
       print 'Failed to shutdown Chrome Frame helper process: '
       print ex
       exit_code = 1
+  return exit_code
 
-  return exit_code
 
 if __name__ == '__main__':
   sys.exit(main())