Fix a concurrency issue happening with deep dependencies when the intermediary

tests/gclient_utils_test.py

 #!/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.
 
 # pylint: disable=E1101,W0403
 
 import os
 import StringIO
 
@@ skipping 18 matching lines @@
   def testMembersChanged(self):
     members = [
         'CheckCallAndFilter',
         'CheckCallAndFilterAndHeader', 'Error', 'ExecutionQueue', 'FileRead',
         'FileWrite', 'FindFileUpwards', 'FindGclientRoot',
         'GetGClientRootAndEntries', 'IsDateRevision', 'MakeDateRevision',
         'MakeFileAutoFlush', 'MakeFileAnnotated', 'PathDifference',
         'PrintableObject', 'RemoveDirectory', 'SoftClone', 'SplitUrlRevision',
         'SyntaxErrorToError', 'WorkItem',
         'errno', 'lockedmethod', 'logging', 'os', 'Queue', 're', 'rmtree',
-        'stat', 'subprocess2', 'sys','threading', 'time',
+        'safe_makedirs', 'stat', 'subprocess2', 'sys','threading', 'time',
     ]
     # If this test fails, you should add the relevant test.
     self.compareMembers(gclient_utils, members)
 
 
 
 class CheckCallAndFilterTestCase(GclientUtilBase):
   class ProcessIdMock(object):
     def __init__(self, test_string):
       self.stdout = StringIO.StringIO(test_string)
@@ skipping 117 matching lines @@
     os.chmod(l3, 0)
     os.chmod(l2, 0)
     os.chmod(l1, 0)
 
 
 if __name__ == '__main__':
   import unittest
   unittest.main()
 
 # vim: ts=2:sw=2:tw=80:et: