def _GetTombstoneData(device, tombstone_file):
  """Retrieve the tombstone data from the device

  Args:
    device: An instance of DeviceUtils.
    tombstone_file: the tombstone to retrieve

  Returns:
    A list of lines
  """
  return device.old_interface.GetProtectedFileContents(
      '/data/tombstones/' + tombstone_file)