[Web Payments] Use shippingType to choose the Payment Sheet shipping strings.

components/payments/content/payment_request.h

Index: components/payments/content/payment_request.h
diff --git a/components/payments/content/payment_request.h b/components/payments/content/payment_request.h
index 8ae228f5dab23bb4a1683243ebb4334ac3cac281..4a6507ddc24a53997e1c84bbf5accbe3af18fc60 100644
--- a/components/payments/content/payment_request.h
+++ b/components/payments/content/payment_request.h
@@ -145,6 +145,7 @@ class PaymentRequest : public mojom::PaymentRequest,
   }
 
   payments::mojom::PaymentDetails* details() { return details_.get(); }
+  payments::mojom::PaymentOptions* options() { return options_.get(); }
   const std::vector<std::string>& supported_card_networks() {
     return supported_card_networks_;
   }