[Findit] Add three sub-pipelines to analyze build failure.

appengine/findit/common/git_repository.py

 # Copyright (c) 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 base64
 import json
 import re
 
 from common.blame import Blame
 from common.blame import Region
@@ skipping 41 matching lines @@
 
   return (commit_position, code_review_url)
 
 
 def NormalizeEmail(email):
   """Normalize the email from git repo.
 
   Some email is like: person@@chromium.org@bbb929c8-8fbe-4397-9dbb-9b2b20218538.
   """
   parts = email.split('@')
-  return '@'.join(parts[:-1])
+  if len(parts) > 2:
+    return '@'.join(parts[0:2])
+  else:
+    return email
 
 
 class GitRepository(Repository):
   """Represent a git repository on https://chromium.googlesource.com."""
 
   def __init__(self, repo_url, http_client):
     super(GitRepository, self).__init__()
     self.repo_url = repo_url
     if self.repo_url.endswith('/'):
       self.repo_url = self.repo_url[:-1]
@@ skipping 65 matching lines @@
     return blame
 
   def GetSource(self, path, revision):
     """Return the source code of the file at |path| of the given revision."""
     url = '%s/+/%s/%s' % (self.repo_url, revision, path)
 
     status_code, content = self.http_client.Get(url, {'format': 'text'})
     if status_code != 200:
       return None
     return base64.b64decode(content)