[Findit] Fetch DEPS from buildspec/ instead of trunk for chrome official builds.

appengine/findit/crash/test/findit_for_crash_test.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.
 
 from collections import defaultdict
 
 from common.blame import Region, Blame
 from common.change_log import ChangeLog
 from common.dependency import Dependency, DependencyRoll
 from common.git_repository import GitRepository
@@ skipping 338 matching lines @@
     expected_match_results = [
         {
             'url': 'https://repo.test/+/1',
             'revision': '1',
             'dep_path': 'src/',
             'component': '',
             'author': 'r@chromium.org',
             'time': 'Thu Mar 31 21:24:43 2016',
             'reason': ('1. Top frame changed is frame #0 (score: 1)\n'
                        '2. Minimum distance to crashed line is 0 (score: 1)\n'
-                       '\nChanged file a.cc which crashed in func (#0)'
+                       '\nChanged file a.cc crashed in func (#0)'
                        ', func (#1)'),
             'confidence': 1,
         },
         {
             'url': 'https://repo.test/+/3',
             'revision': '3',
             'dep_path': 'src/',
             'component': '',
             'author': 'e@chromium.org',
             'time': 'Thu Apr 1 21:24:43 2016',
             'reason': ('1. Top frame changed is frame #5 (score: 0)\n'
                        '2. Minimum distance to crashed line is 20 (score: 0)\n'
-                       '\nChanged file f.cc which crashed in func (#5)'),
+                       '\nChanged file f.cc crashed in func (#5)'),
             'confidence': 0.22857142857142856,
         },
     ]
 
     regression_deps_rolls = {'src/': DependencyRoll('src/', 'https://repo',
                                                     '1', '2')}
 
     self.assertEqual(findit_for_crash.FindItForCrash(
         Stacktrace(), regression_deps_rolls, {}), expected_match_results)