luci-py: Making __file__ usage unicode safe.

client/tests/url_open_timeout_test.py

 #!/usr/bin/env python
 # Copyright 2013 The LUCI Authors. All rights reserved.
 # Use of this source code is governed under the Apache License, Version 2.0
 # that can be found in the LICENSE file.
 
 import BaseHTTPServer
 import logging
 import os
 import re
 import SocketServer
 import sys
 import threading
 import time
 import unittest
 
-ROOT_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+ROOT_DIR = os.path.dirname(os.path.dirname(os.path.abspath(
+    __file__.decode(sys.getfilesystemencoding()))))
 sys.path.insert(0, ROOT_DIR)
 sys.path.insert(0, os.path.join(ROOT_DIR, 'third_party'))
 
 from depot_tools import auto_stub
 from utils import net
 
 
 class SleepingServer(SocketServer.ThreadingMixIn, BaseHTTPServer.HTTPServer):
   """Multithreaded server that serves requests that block at various stages."""
 
@@ skipping 141 matching lines @@
     gen = stream.iter_content(len(SleepingHandler.first_line))
     gen.next()
     with self.assertRaises(net.TimeoutError):
       gen.next()
 
 
 if __name__ == '__main__':
   VERBOSE = '-v' in sys.argv
   logging.basicConfig(level=logging.DEBUG if VERBOSE else logging.ERROR)
   unittest.main()