[Findit] Add fracas analysis result feedback page.

appengine/findit/crash/findit_for_crash.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.diff import ChangeType
 from common.git_repository import GitRepository
 from common.http_client_appengine import HttpClientAppengine
 from crash import crash_util
@@ skipping 194 matching lines @@
   """Finds culprit results for crash.
 
   Args:
     stacktrace (Stactrace): Parsed Stactrace object.
     regression_deps_rolls (dict): Maps dep_path to DependencyRoll in
       regression range.
     crashed_deps (dict of Dependencys): Represents all the dependencies of
       crashed revision.
 
   Returns:
-    List of dicts of culprit results, sorted by confidence from highest to
-    lowest.
+    List of Results, sorted by confidence from highest to lowest.
   """
   if not regression_deps_rolls:
     return []
 
   # Findit will only analyze the top n frames in each callstacks.
   stack_trace = Stacktrace([
       CallStack(stack.priority, stack.format_type, stack[:top_n])
       for stack in stacktrace])
 
   # We are only interested in the deps in crash stack (the callstack that
@@ skipping 15 matching lines @@
 
   aggregator = Aggregator([TopFrameIndex(), MinDistance()])
 
   map(aggregator.ScoreAndReason, results)
 
   # Filter all the 0 confidence results.
   results = filter(lambda r: r.confidence != 0, results)
   if not results:
     return []
 
-  sorted_results = sorted([result.ToDict() for result in results],
-                          key=lambda r: -r['confidence'])
+  sorted_results = sorted(results, key=lambda r: -r.confidence)
 
-  if sorted_results[0]['confidence'] > 0.999:
+  if sorted_results[0].confidence > 0.999:
     return sorted_results[:1]
 
   return sorted_results[:3]