message: Sync download_tools.py with changes in gclient_utils module.
  Cr-Commit-Position: refs/heads/master@{#28742}
diff: @@ -49,7 +49,8 @@ def main(directories):
  # Perform download similar to how gclient hooks execute.
  try:
  - gclient_utils.CheckCallAndFilterAndHeader(cmd, cwd=SRC_DIR, always=True)
  + gclient_utils.CheckCallAndFilter(
  + cmd, cwd=SRC_DIR, always_show_header=True)
  except (gclient_utils.Error, subprocess2.CalledProcessError) as e:
  print 'Error: %s' % str(e)
  return 2
  