Set svn:executable bit on scripts that are executable.

chrome/test/functional/chromeos_private_view.py

-#!/usr/bin/python
+#!/usr/bin/env python
 # Copyright (c) 2012 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.
 
 import os
 
 import pyauto_functional # must be imported before pyauto
 import pyauto
 
 
@@ skipping 18 matching lines @@
     self.assertTrue(ext_id, 'Failed to install extension.')
     extension = self._GetExtensionInfoById(self.GetExtensionsInfo(), ext_id)
     self.assertTrue(extension['is_enabled'],
                     msg='Extension was not enabled on installation')
     self.assertFalse(extension['allowed_in_incognito'],
                      msg='Extension was allowed in incognito on installation.')
 
 
 if __name__ == '__main__':
   pyauto_functional.Main()