use py3 compatible octal constants

testing_support/git_test_utils.py

 # Copyright 2013 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 atexit
 import collections
 import copy
 import datetime
 import hashlib
 import os
@@ skipping 222 matching lines @@
 class GitRepo(object):
   """Creates a real git repo for a GitRepoSchema.
 
   Obtains schema and content information from the GitRepoSchema.
 
   The format for the commit data supplied by GitRepoSchema.data_for is:
     {
       SPECIAL_KEY: special_value,
       ...
       "path/to/some/file": { 'data': "some data content for this file",
-                              'mode': 0755 },
+                              'mode': 0o0755 },
       ...
     }
 
   The SPECIAL_KEYs are the following attribues of the GitRepo class:
     * AUTHOR_NAME
     * AUTHOR_EMAIL
     * AUTHOR_DATE - must be a datetime.datetime instance
     * COMMITTER_NAME
     * COMMITTER_EMAIL
     * COMMITTER_DATE - must be a datetime.datetime instance
@@ skipping 266 matching lines @@
     super(GitRepoReadWriteTestBase, self).setUp()
     self.repo = self.r_schema.reify()
 
   def tearDown(self):
     self.repo.nuke()
     super(GitRepoReadWriteTestBase, self).tearDown()
 
   def assertSchema(self, schema_string):
     self.assertEqual(GitRepoSchema(schema_string).simple_graph(),
                      self.repo.to_schema().simple_graph())