Fix python scripts in src/chrome/

chrome/test/pyautolib/chromeos_network.py

-#!/usr/bin/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.
 
 import copy
 import dbus
 import logging
 import os
 import time
 
@@ skipping 330 matching lines @@
     else:
       service_path = self.GetServicePath(router['ssid'])
       assert service_path, 'Service with SSID %s is not present.' % \
              router['ssid']
 
       logging.debug('Connecting to router %s.' % router_name)
       error_string = self.ConnectToWifiNetwork(service_path,
                                                password=passphrase,
                                                shared=shared)
     return error_string