Fix python scripts in src/chrome/

chrome/test/pyautolib/generate_docs.py

Index: chrome/test/pyautolib/generate_docs.py
diff --git a/chrome/test/pyautolib/generate_docs.py b/chrome/test/pyautolib/generate_docs.py
old mode 100644
new mode 100755
index 352b45364b31f7fb2cbd8848ef573404142cbb13..a603ad8008600d2c8038cd2fcf8557be817d480f
--- a/chrome/test/pyautolib/generate_docs.py
+++ b/chrome/test/pyautolib/generate_docs.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/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.
@@ -36,7 +36,7 @@ def main():
 
   if options.dir == os.getcwd():
     print 'Export complete, files are located in %s' % options.dir
-    return
+    return 1
 
   new_files = current_contents.difference(previous_contents)
   for file_name in new_files:
@@ -50,8 +50,8 @@ def main():
       shutil.move(full_path, options.dir)
 
   print 'Export complete, files are located in %s' % options.dir
+  return 0
 
 
 if __name__ == '__main__':
-  main()
-
+  sys.exit(main())