message: Make tf.contrib.estimator.add_metrics work with warm-starting.
diff: @@ -97,7 +97,10 @@ def add_metrics(estimator, metric_fn):
  return estimator_lib.Estimator(
  model_fn=new_model_fn,
  model_dir=estimator.model_dir,
  - config=estimator.config)
  + config=estimator.config,
  + # pylint: disable=protected-access
  + warm_start_from=estimator._warm_start_settings)
  + # pylint: enable=protected-access
  def clip_gradients_by_norm(optimizer, clip_norm):
  