[Findit] Make sure build data is updated when use build master.

appengine/findit/waterfall/build_util.py

 # Copyright 2015 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 datetime import datetime
 
 from common.http_client_appengine import HttpClientAppengine as HttpClient
 from model.wf_build import WfBuild
 from waterfall import buildbot
 from waterfall import lock_util
@@ skipping 27 matching lines @@
       # Retrieve build data from build archive first.
       build.data = buildbot.GetBuildDataFromArchive(
           master_name, builder_name, build_number, HTTP_CLIENT_NO_404_ERROR)
 
       if build.data:
         build.data_source = CHROME_BUILD_EXTRACT
       elif not lock_util.WaitUntilDownloadAllowed(
           master_name):  # pragma: no cover
         return None
 
-    if not build.data:
+    if not build.data or not use_cbe:
       # Retrieve build data from build master.
       build.data = buildbot.GetBuildDataFromBuildMaster(
           master_name, builder_name, build_number, HTTP_CLIENT_LOGGING_ERRORS)
       build.data_source = BUILDBOT_MASTER
 
     build.last_crawled_time = datetime.utcnow()
     build.put()
 
   return build