[Findit] Factoring the gitiles (etc) stuff out into its own directory

appengine/findit/waterfall/test/build_failure_analysis_test.py

 # Copyright 2015 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.
 
 from datetime import datetime
 
-from common.blame import Blame
-from common.blame import Region
-from common.change_log import FileChangeInfo
-from common.diff import ChangeType
-from common.git_repository import GitRepository
+from lib.gitiles.blame import Blame
+from lib.gitiles.blame import Region
+from lib.gitiles.change_log import FileChangeInfo
+from lib.gitiles.diff import ChangeType
+from lib.gitiles.git_repository import GitRepository
 from common.waterfall import failure_type
 from waterfall import build_failure_analysis
 from waterfall.failure_signal import FailureSignal
 from waterfall.test import wf_testcase
 
 
 class BuildFailureAnalysisTest(wf_testcase.WaterfallTestCase):
 
   def _MockGetChangeLog(self, revision):
 
@@ skipping 1191 matching lines @@
         touched_file, file_path_in_log, justification, file_name_occurrences,
         line_numbers, repo_info, commit_revision)
 
     expected_justification = {
         'score': 4,
         'hints': {
             'modified c.cc[1, 3] (and it was in log)': 4
         }
     }
     self.assertEqual(expected_justification, justification.ToDict())