Pass buildbucket.build.id to cbuildbot as --buildbucket-id.

scripts/slave/recipe_modules/chromite/config.py

 # Copyright 2013 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 os
 import types
 
 from recipe_engine.config import config_item_context, ConfigGroup
 from recipe_engine.config import Dict, Single, Set
 
 import DEPS
 path_api = DEPS['path'].api
 
 
 def BaseConfig(CBB_CONFIG=None, CBB_BRANCH=None, CBB_BUILD_NUMBER=None,
-               CBB_DEBUG=False, CBB_CLOBBER=False, **_kwargs):
+               CBB_DEBUG=False, CBB_CLOBBER=False, CBB_BUILDBUCKET_ID=None,
+               **_kwargs):
   return ConfigGroup(
     # Base mapping of repository key to repository name.
     repositories = Dict(value_type=Set(basestring)),
 
     # Checkout Chromite at this branch. "origin/" will be prepended.
     chromite_branch = Single(basestring, empty_val=CBB_BRANCH or 'master'),
 
     # Should the Chrome version be supplied to cbuildbot?
     use_chrome_version = Single(bool),
 
@@ skipping 29 matching lines @@
       # The (optional) configuration repository to use.
       config_repo = Single(basestring),
 
       # This disables Chromite bootstrapping by omitting the explicit "--branch"
       # argument.
       disable_bootstrap = Single(bool),
 
       # Whether this Chromite version supports warm cache.
       # https://chromium-review.googlesource.com/#/c/348011
       supports_repo_cache = Single(bool),
+
+      # If supplied, forward to cbuildbot as '--buildbucket-id'
+      buildbucket_id = Single(basestring, empty_val=CBB_BUILDBUCKET_ID)
     ),
 
     # A list of branches whose Chromite version is "old". Old Chromite
     # buildbot commands reside in the "buildbot" subdirectory of the Chromite
     # repository instead of the "bin".
     old_chromite_branches = Set(basestring),
 
     # A list of branches whose builders should not use a shared buildroot.
     non_shared_root_branches = Set(basestring),
 
@@ skipping 67 matching lines @@
 
 @config_ctx(group='master', includes=['external'])
 def chromiumos_tryserver(c):
   c.cbb.disable_bootstrap = True
 
 @config_ctx()
 def chromiumos_coverage_test(c):
   c.use_chrome_version = True
   c.read_cros_manifest = True
   c.cbb.chrome_rev = 'stable'