Add git-reup and friends

tests/git_number_test.py

 #!/usr/bin/env python
 # 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.
 
 """Unit tests for git_number.py"""
 
 import binascii
 import os
 import sys
 
 DEPOT_TOOLS_ROOT = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
 sys.path.insert(0, DEPOT_TOOLS_ROOT)
 
 from testing_support import git_test_utils
 from testing_support import coverage_utils
 
 
 class Basic(git_test_utils.GitRepoReadWriteTestBase):
-  REPO = """
+  REPO_SCHEMA = """
   A B C D E
     B   F E
   X Y     E
   """
 
   @classmethod
   def setUpClass(cls):
     super(Basic, cls).setUpClass()
     import git_number
     cls.gn = git_number
@@ skipping 46 matching lines @@
     self.assertEqual(
         None,
         self.repo.run(self.gn.get_num, binascii.unhexlify(self.repo['A'])))
 
 
 if __name__ == '__main__':
   sys.exit(coverage_utils.covered_main(
     os.path.join(DEPOT_TOOLS_ROOT, 'git_number.py'),
     '3.7'
   ))