Fix Dartium Upload for sha256 sums

tools/dartium/upload_steps.py

 #!/usr/bin/python
 
 # 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.
 
 """Steps to archive dartium, content_shell, and chromedriver from buildbots.
 
 Imported by buildbot_annotated_steps.py and multivm_archive.py
 """
@@ skipping 156 matching lines @@
   """
   print '@@@BUILD_STEP %s_upload_archive @@@' % module
   revision = 'latest' if archive_latest else info.revision
   name = module.replace('drt', 'content_shell')
   namer = bot_utils.GCSNamer(info.channel, bot_utils.ReleaseType.RAW)
   remote_path = namer.dartium_variant_zipfilepath(revision,
                                                   name,
                                                   sys.platform,
                                                   info.arch,
                                                   info.mode.lower())
-  UploadFile(zip_file, remote_path, create_md5sum=True)
+  UploadFile(zip_file, remote_path, checksum_files=True)
 
   print '@@@STEP_LINK@download@' + remote_path + '@@@'
 
 
 def OldUploadFile(source, target):
   """Upload an archive zip file to Google storage.
   """
 
   # Upload file.
   cmd = [GSUTIL, 'cp', source, target]
@@ skipping 79 matching lines @@
 def RemoveArchives(archives):
   """Remove the list of archives in Google storage.
   """
   for archive in archives:
     if archive.find(GS_SITE) == 0:
       cmd = [GSUTIL, 'rm', archive.rstrip()]
       (status, _) = ExecuteCommand(cmd)
       if status != 0:
         return status
   return 0