Add "Infra" to the builder_name_schema

tools/builder_name_schema.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.
 
 
 """ Utilities for dealing with builder names. This module obtains its attributes
 dynamically from builder_name_schema.json. """
 
 
 import json
 import os
 
 
 # All of these global variables are filled in by _LoadSchema().
 
 # The full schema.
 BUILDER_NAME_SCHEMA = None
 
 # Character which separates parts of a builder name.
 BUILDER_NAME_SEP = None
 
 # Builder roles.
 BUILDER_ROLE_CANARY = 'Canary'
 BUILDER_ROLE_BUILD = 'Build'
 BUILDER_ROLE_HOUSEKEEPER = 'Housekeeper'
+BUILDER_ROLE_INFRA = 'Infra'
 BUILDER_ROLE_PERF = 'Perf'
 BUILDER_ROLE_TEST = 'Test'
 BUILDER_ROLES = (BUILDER_ROLE_CANARY,
                  BUILDER_ROLE_BUILD,
                  BUILDER_ROLE_HOUSEKEEPER,
+                 BUILDER_ROLE_INFRA,
                  BUILDER_ROLE_PERF,
                  BUILDER_ROLE_TEST)
 
 # Suffix which distinguishes trybots from normal bots.
 TRYBOT_NAME_SUFFIX = None
 
 
 def _LoadSchema():
   """ Load the builder naming schema from the JSON file. """
 
@@ skipping 144 matching lines @@
       result[key] = pop_front()
     if split_name:
       result['extra_config'] = pop_front()
     if split_name:
       raise ValueError('Invalid builder name: %s' % builder_name)
   else:
     raise ValueError('Invalid builder name: %s' % builder_name)
   return result