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

appengine/findit/common/test/deps_parser_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 copy
 import textwrap
 import unittest
 
 from common import dependency
 from common import deps_parser
@@ skipping 357 matching lines @@
                 'children': {
                 }
             },
         }
     }
 
 
     def _Test(target_os_list, expected_deps_tree_json):
       root_dep = dependency.Dependency(
           root_dep_path, root_dep_repo_url, root_dep_revision,
-          root_dep_deps_file)
+          deps_file=root_dep_deps_file)
 
       deps_parser.UpdateDependencyTree(
           root_dep, target_os_list, DummyDEPSLoader(self))
 
       self.assertEqual(expected_deps_tree_json, root_dep.ToDict())
 
     _Test(['unix'], expected_deps_tree_json_unix)
     _Test(['win'], expected_deps_tree_json_win)
     _Test(['all', 'win'], expected_deps_tree_json_all)