message: Fix Estimator test after checkpointable refactor
diff: @@ -41,6 +41,7 @@ from tensorflow.python.training import queue_runner
  from tensorflow.python.training import saver as training_saver
  from tensorflow.python.training import session_manager as sm
  from tensorflow.python.training import session_run_hook
  +from tensorflow.python.training.checkpointable import graph_view
  from tensorflow.python.training.checkpointable import util as checkpointable_util
  from tensorflow.python.util import function_utils
  from tensorflow.python.util.tf_export import tf_export
  @@ -229,8 +230,8 @@ class Scaffold(object):
  # pylint: enable=g-long-lambda
  if isinstance(self._saver, checkpointable_util.Checkpoint):
  self._saver = training_saver.Saver(
  - var_list=checkpointable_util.CheckpointableSaver(
  - self._saver).gather_objects(),
  + var_list=graph_view.ObjectGraphView(
  + self._saver).frozen_saveable_objects(),
  sharded=True)
  else:
  self._saver.build()
  