message: Fix issue in the base_layer_test for summary writer.
  tf.summary.scalar will raise error if the default step is not set.
diff: @@ -974,7 +974,7 @@ class SymbolicSupportTest(keras_parameterized.TestCase):
  tmp_dir = self.get_temp_dir()
  writer = summary_ops_v2.create_file_writer_v2(tmp_dir)
  - with writer.as_default(), summary_ops_v2.record_if(True):
  + with writer.as_default(step=1), summary_ops_v2.record_if(True):
  my_layer = MyLayer()
  x = array_ops.ones((10, 10))
  