Fix many* python scripts in src/

chrome_frame/tools/helper_shutdown.py

Index: chrome_frame/tools/helper_shutdown.py
diff --git a/chrome_frame/tools/helper_shutdown.py b/chrome_frame/tools/helper_shutdown.py
old mode 100644
new mode 100755
index 770adda23b637c8ffaa8ef01b917ab49ddc690d8..a8188087f73f0ac7921b7639da332fce51381895
--- a/chrome_frame/tools/helper_shutdown.py
+++ b/chrome_frame/tools/helper_shutdown.py
@@ -1,14 +1,18 @@
-# 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',
@@ -23,8 +27,8 @@ def main():
       print 'Failed to shutdown Chrome Frame helper process: '
       print ex
       exit_code = 1
-
   return exit_code
 
+
 if __name__ == '__main__':
   sys.exit(main())