message: Fix broken graph mode test.
  Broken by which asusmes eager mode, always.
diff: @@ -283,7 +283,9 @@ class KerasCallbacksTest(keras_parameterized.TestCase):
  model.fit(dataset, epochs=2, steps_per_epoch=10)
  self.assertRegex(printed.contents(), expected_log)
  + @keras_parameterized.run_all_keras_modes
  def test_trivial_backup_restore(self):
  + if testing_utils.should_run_eagerly():
  model = keras.Sequential([keras.layers.Dense(1)])
  model.compile('sgd', 'mse')
  cbk = BackupAndRestore(self.get_temp_dir())
  