Create a new depot_tools_testing_lib to move utility modules there

tests/gclient_smoketest.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.
 
 """Smoke tests for gclient.py.
 
 Shell out 'gclient' and run basic conformance tests.
 
 This test assumes GClientSmokeBase.URL_BASE is valid.
 """
 
 import logging
 import os
 import re
 import subprocess
 import sys
 import unittest
 
 ROOT_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
 sys.path.insert(0, ROOT_DIR)
 
-from fake_repos import join, write, FakeReposTestBase
+from testing_support.fake_repos import join, write, FakeReposTestBase
 
 import subprocess2
 
 GCLIENT_PATH = os.path.join(ROOT_DIR, 'gclient')
 COVERAGE = False
 
 
 class GClientSmokeBase(FakeReposTestBase):
   def setUp(self):
     super(GClientSmokeBase, self).setUp()
@@ skipping 1247 matching lines @@
 
   if '-c' in sys.argv:
     COVERAGE = True
     sys.argv.remove('-c')
     if os.path.exists('.coverage'):
       os.remove('.coverage')
     os.environ['COVERAGE_FILE'] = os.path.join(
         os.path.dirname(os.path.dirname(os.path.abspath(__file__))),
         '.coverage')
   unittest.main()