[Predator] Move time_util from common/ to lib/, split code review related part to code_review_util

appengine/findit/common/findit_testcase.py

 # Copyright 2016 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 os
 
 from testing_utils import testing
 
-from common import time_util
+from lib import time_util
 
 
 class FinditTestCase(testing.AppengineTestCase):  # pragma: no cover.
   # Setup the customized queues.
   taskqueue_stub_root_path = os.path.join(
     os.path.dirname(__file__), os.path.pardir)
 
   def MockPipeline(
       self, pipeline_class, result, expected_args, expected_kwargs=None):
     """Mocks a pipeline to return a value and asserts the expected parameters.
@@ skipping 15 matching lines @@
 
     self.mock(pipeline_class, 'run', Mocked_run)
 
   def MockUTCNow(self, mocked_utcnow):
     """Mocks utcnow with the given value for testing."""
     self.mock(time_util, 'GetUTCNow', lambda: mocked_utcnow)
 
   def MockUTCNowWithTimezone(self, mocked_utcnow):
     """Mocks utcnow with the given value for testing."""
     self.mock(time_util, 'GetUTCNowWithTimezone', lambda: mocked_utcnow)