Fix python scripts in src/chrome/

chrome/test/pyautolib/remote_host.py

-#!/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.
 
 import cStringIO
 import os
 import pickle
 import socket
 import sys
 
@@ skipping 80 matching lines @@
     response = pickle.dumps((result, stdout.getvalue(), stderr.getvalue(),
                              exception))
     if self._socket.send(response) != len(response):
       self.StopSocketServer()
 
 
 if __name__ == '__main__':
   pyauto_suite = pyauto.PyUITestSuite(sys.argv)
   RemoteHost(('', 7410))
   del pyauto_suite