[Findit] Add a sub-pipeline to analyze failures caused by DEPS rolls.

appengine/findit/waterfall/test/identify_culprit_pipeline_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 pipeline_utils.appengine_third_party_pipeline_src_pipeline import handlers
 from testing_utils import testing
 
 from model.wf_analysis import WfAnalysis
 from model import wf_analysis_status
 from model import wf_analysis_result_status
@@ skipping 195 matching lines @@
     analysis.result = None
     analysis.status = wf_analysis_status.ANALYZING
     analysis.put()
 
     failure_info = {
       'master_name': master_name,
       'builder_name': builder_name,
       'build_number': build_number,
     }
     change_logs = {}
+    deps_info = {}
     signals = {}
 
     dummy_result = {'failures': []}
 
     def MockAnalyzeBuildFailure(*_):
       return dummy_result
 
     self.mock(build_failure_analysis,
               'AnalyzeBuildFailure', MockAnalyzeBuildFailure)
 
     pipeline = identify_culprit_pipeline.IdentifyCulpritPipeline(
-        failure_info, change_logs, signals)
+        failure_info, change_logs, deps_info, signals)
     pipeline.start()
     self.execute_queued_tasks()
 
     expected_suspected_cls = []
 
     analysis = WfAnalysis.Get(master_name, builder_name, build_number)
     self.assertIsNotNone(analysis)
     self.assertEqual(dummy_result, analysis.result)
     self.assertEqual(wf_analysis_status.ANALYZED, analysis.status)
     self.assertIsNone(analysis.result_status)
     self.assertEqual(expected_suspected_cls, analysis.suspected_cls)