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

appengine/findit/waterfall/test/build_failure_analysis_test.py

Index: appengine/findit/waterfall/test/build_failure_analysis_test.py
diff --git a/appengine/findit/waterfall/test/build_failure_analysis_test.py b/appengine/findit/waterfall/test/build_failure_analysis_test.py
index 8fbd51e8e545c923a83b148a34f233bb5db133cb..e2b6907bb53c82aac67c27df79eff5f0ebf5fab8 100644
--- a/appengine/findit/waterfall/test/build_failure_analysis_test.py
+++ b/appengine/findit/waterfall/test/build_failure_analysis_test.py
@@ -113,7 +113,7 @@ class BuildFailureAnalysisTest(unittest.TestCase):
     }
 
     justification = build_failure_analysis._CheckFiles(
-        FailureSignal.FromDict(failure_signal_json), change_log_json)
+        FailureSignal.FromDict(failure_signal_json), change_log_json, {})
     self.assertIsNotNone(justification)
     # The score is 14 because:
     # +5 added a/b/f1.cc (same file src/a/b/f1.cc in failure_signal log)
@@ -142,7 +142,7 @@ class BuildFailureAnalysisTest(unittest.TestCase):
     }
 
     justification = build_failure_analysis._CheckFiles(
-        FailureSignal.FromDict(failure_signal_json), change_log_json)
+        FailureSignal.FromDict(failure_signal_json), change_log_json, {})
     self.assertIsNone(justification)
 
   def testAnalyzeSuccessfulBuild(self):
@@ -150,7 +150,7 @@ class BuildFailureAnalysisTest(unittest.TestCase):
         'failed': False,
     }
     result = build_failure_analysis.AnalyzeBuildFailure(
-        failure_info, None, None)
+        failure_info, None, None, None)
     self.assertEqual(0, len(result['failures']))
 
   def testAnalyzeBuildFailure(self):
@@ -239,6 +239,10 @@ class BuildFailureAnalysisTest(unittest.TestCase):
             ],
         },
     }
+    deps_info = {
+      'deps_rolls': {},
+      'current_deps': {},
+    }
     failure_signals_json = {
         'a': {
           'files': {
@@ -293,5 +297,5 @@ class BuildFailureAnalysisTest(unittest.TestCase):
     }
 
     analysis_result = build_failure_analysis.AnalyzeBuildFailure(
-        failure_info, change_logs, failure_signals_json)
+        failure_info, change_logs, deps_info, failure_signals_json)
     self.assertEqual(expected_analysis_result, analysis_result)