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

appengine/findit/gitiles/test/change_log_test.py

 # Copyright 2014 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 unittest
 
-from common.change_log import FileChangeInfo
-from common.change_log import ChangeLog
+from gitiles.change_log import FileChangeInfo, ChangeLog
 
 class ChangeLogTest(unittest.TestCase):
   def testFileChangeinfo(self):
     filechange_dict = {
         'change_type': 'copy',
         'old_path': 'a',
         'new_path': 'b'
     }
     filechange_info = FileChangeInfo.FromDict(filechange_dict)
     self.assertEqual(filechange_dict, filechange_info.ToDict())
@@ skipping 21 matching lines @@
           }
       ],
       'message': 'blabla...',
       'commit_url': 'https://chromium.googlesource.com/chromium/src/+/git_hash',
       'code_review_url': 'https://codereview.chromium.org/2222',
       'reverted_revision': '8d4a4fa6s18raf3re12tg6r'
     }
 
     change_log = ChangeLog.FromDict(change_log_dict)
     self.assertEqual(change_log_dict, change_log.ToDict())