Fix #2 for dexopt_test now that '&' is not a valid class loader context.

                           bool should_binder_call_succeed,

                           /*out */ binder::Status* binder_result) {

        std::optional<std::string> out_path = oat_dir ? std::make_optional<std::string>(oat_dir) : std::nullopt;

        std::string class_loader_context = "&";

        std::string class_loader_context = "PCL[]";

        int32_t target_sdk_version = 0;  // default

        std::string profile_name = "primary.prof";

        std::optional<std::string> dm_path_opt = dm_path ? std::make_optional<std::string>(dm_path) : std::nullopt;