Verify behavior of PaymentRequest constructor.

components/payments/content/payment_details_validation.cc

Index: components/payments/content/payment_details_validation.cc
diff --git a/components/payments/content/payment_details_validation.cc b/components/payments/content/payment_details_validation.cc
index c894459ba1f3aca5aaf487a05fd1e3712ce00f0c..1edd6fb1fa56e2f7138a384bf4264a3fc60aa213 100644
--- a/components/payments/content/payment_details_validation.cc
+++ b/components/payments/content/payment_details_validation.cc
@@ -20,11 +20,6 @@ bool validateShippingOptionOrPaymentItem(
     const T& item,
     const payments::mojom::PaymentItemPtr& total,
     std::string* error_message) {
-  if (item->label.empty()) {
-    *error_message = "Item label required";
-    return false;
-  }
-
   if (!item->amount) {
     *error_message = "Currency amount required";
     return false;