[Web Payments] Implement item selection in lists.

components/payments/content/payment_request_state.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/payments/content/payment_request_state.h"
 
+#include <set>
+
 #include "components/autofill/core/browser/autofill_data_util.h"
 #include "components/autofill/core/browser/autofill_profile.h"
 #include "components/autofill/core/browser/credit_card.h"
 #include "components/autofill/core/browser/personal_data_manager.h"
 #include "components/payments/content/payment_request_spec.h"
 #include "components/payments/core/autofill_payment_instrument.h"
 
 namespace payments {
 
 PaymentRequestState::PaymentRequestState(
@@ skipping 36 matching lines @@
   delegate_->OnPaymentResponseAvailable(std::move(payment_response));
 }
 
 void PaymentRequestState::GeneratePaymentResponse() {
   DCHECK(is_ready_to_pay());
   // Fetch the instrument details, will call back into
   // PaymentRequest::OnInstrumentsDetailsReady.
   selected_instrument_->InvokePaymentApp(this);
 }
 
+void PaymentRequestState::SetSelectedShippingOption(
+    mojom::PaymentShippingOption* option) {
+  selected_shipping_option_ = option;
+  UpdateIsReadyToPayAndNotifyObservers();
+}
+
 void PaymentRequestState::SetSelectedShippingProfile(
     autofill::AutofillProfile* profile) {
   selected_shipping_profile_ = profile;
   UpdateIsReadyToPayAndNotifyObservers();
 }
 
 void PaymentRequestState::SetSelectedContactProfile(
     autofill::AutofillProfile* profile) {
   selected_contact_profile_ = profile;
   UpdateIsReadyToPayAndNotifyObservers();
@@ skipping 139 matching lines @@
       spec_->details().shipping_options.rend(),
       [](const payments::mojom::PaymentShippingOptionPtr& element) {
         return element->selected;
       });
   if (selected_shipping_option_it != spec_->details().shipping_options.rend()) {
     selected_shipping_option_ = selected_shipping_option_it->get();
   }
 }
 
 }  // namespace payments