gclient_utils: Fix call to sleep() after r229219.

gclient_utils.py

 # 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.
 
 """Generic utils."""
 
 import codecs
 import logging
 import os
 import pipes
@@ skipping 466 matching lines @@
     except KeyboardInterrupt:
       print >> sys.stderr, 'Failed while running "%s"' % ' '.join(args)
       raise
 
     if rv == 0:
       return 0
     if not retry:
       break
     print ("WARNING: subprocess '%s' in %s failed; will retry after a short "
            'nap...' % (' '.join('"%s"' % x for x in args), run_cwd))
-    sys.sleep(sleep_interval)
+    time.sleep(sleep_interval)
     sleep_interval *= 2
   raise subprocess2.CalledProcessError(
       rv, args, kwargs.get('cwd', None), None, None)
 
 
 def FindGclientRoot(from_dir, filename='.gclient'):
   """Tries to find the gclient root."""
   real_from_dir = os.path.realpath(from_dir)
   path = real_from_dir
   while not os.path.exists(os.path.join(path, filename)):
@@ skipping 396 matching lines @@
 
   Python on OSX 10.6 raises a NotImplementedError exception.
   """
   try:
     import multiprocessing
     return multiprocessing.cpu_count()
   except:  # pylint: disable=W0702
     # Mac OS 10.6 only
     # pylint: disable=E1101
     return int(os.sysconf('SC_NPROCESSORS_ONLN'))