message: Make tf.estimators.Exporter work with TFLiteConverter in 2.0.
diff: @@ -295,6 +295,9 @@ class TFLiteConverterV2(TFLiteConverterBase):
  Raises:
  Invalid signature keys.
  """
  + # Ensures any graphs created in Eager mode are able to run. This is required
  + # in order to create a tf.estimator.Exporter that exports a TFLite model.
  + with context.eager_mode():
  saved_model = _load(saved_model_dir, tags)
  if not signature_keys:
  signature_keys = saved_model.signatures
  