message: When converting an unsupported op in TOCO, we can possibly infer the output type from an attribute named Tout (this works, e.g., for RandomUniformInt).
diff: @@ -1362,6 +1362,9 @@ void ConvertUnsupportedOperator(const NodeDef& node,
  for (int i = 0; i < output_types.type_size(); ++i) {
  op->output_data_types.push_back(ConvertDataType(output_types.type(i)));
  }
  + } else if (HasAttr(node, "Tout")) {
  + const auto& output_type = GetDataTypeAttr(node, "Tout");
  + op->output_data_types.push_back(ConvertDataType(output_type));
  }
  }
  