def PostUploadHook(cl, change, output_api):
  """git cl upload will call this hook after the issue is created/modified.

  This hook modifies the CL description in order to run extra tests.
  """

  def affects_gn_checker(f):
    return 'check_gn_headers' in f.LocalPath()
  if not change.AffectedFiles(file_filter=affects_gn_checker):
    return []
  return output_api.EnsureCQIncludeTrybotsAreAdded(
    cl,
    [
      'master.tryserver.chromium.linux:linux_chromium_dbg_ng',
    ],
    'Automatically added tests to run on CQ.')