[Web Payments] Add a mechanism to build item lists in the PR dialog.

components/payments/payment_request.h

 // 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.
 
 #ifndef COMPONENTS_PAYMENTS_PAYMENT_REQUEST_H_
 #define COMPONENTS_PAYMENTS_PAYMENT_REQUEST_H_
 
 #include <memory>
 #include <string>
 #include <vector>
@@ skipping 73 matching lines @@
   void set_selected_shipping_profile(autofill::AutofillProfile* profile) {
     selected_shipping_profile_ = profile;
   }
   autofill::AutofillProfile* selected_contact_profile() const {
     return selected_contact_profile_;
   }
   void set_selected_contact_profile(autofill::AutofillProfile* profile) {
     selected_contact_profile_ = profile;
   }
 
+  const std::vector<autofill::CreditCard*>& credit_cards();
+
   // Returns the currently selected credit card for this PaymentRequest flow.
   // It's not guaranteed to be complete. Returns nullptr if there is no selected
   // card.
-  autofill::CreditCard* GetCurrentlySelectedCreditCard();
+  autofill::CreditCard* selected_credit_card() { return selected_credit_card_; }
 
   autofill::PersonalDataManager* personal_data_manager() {
     return delegate_->GetPersonalDataManager();
   }
 
   payments::mojom::PaymentDetails* details() { return details_.get(); }
   const std::vector<std::string>& supported_card_networks() {
     return supported_card_networks_;
   }
   content::WebContents* web_contents() { return web_contents_; }
 
  private:
   // Fetches the Autofill Profiles for this user from the PersonalDataManager,
   // and stores copies of them, owned by this Request, in profile_cache_.
   void PopulateProfileCache();
 
-  // Sets the default values for the selected Shipping and Contact profiles.
+  // Sets the default values for the selected Shipping and Contact profiles, as
+  // well as the selected Credit Card.
   void SetDefaultProfileSelections();
 
   // Validates the |method_data| and fills |supported_card_networks_|.
   void PopulateValidatedMethodData(
       const std::vector<payments::mojom::PaymentMethodDataPtr>& method_data);
 
   content::WebContents* web_contents_;
   std::unique_ptr<PaymentRequestDelegate> delegate_;
   // |manager_| owns this PaymentRequest.
   PaymentRequestWebContentsManager* manager_;
   mojo::Binding<payments::mojom::PaymentRequest> binding_;
   payments::mojom::PaymentRequestClientPtr client_;
   payments::mojom::PaymentDetailsPtr details_;
   std::unique_ptr<CurrencyFormatter> currency_formatter_;
   // A set of supported basic card networks.
   std::vector<std::string> supported_card_networks_;
 
   // Profiles may change due to (e.g.) sync events, so profiles are cached after
   // loading and owned here. They are populated once only, and ordered by
   // frecency.
   std::vector<std::unique_ptr<autofill::AutofillProfile>> profile_cache_;
   std::vector<autofill::AutofillProfile*> shipping_profiles_;
   std::vector<autofill::AutofillProfile*> contact_profiles_;
   autofill::AutofillProfile* selected_shipping_profile_;
   autofill::AutofillProfile* selected_contact_profile_;
+  std::vector<std::unique_ptr<autofill::CreditCard>> card_cache_;
+  std::vector<autofill::CreditCard*> credit_cards_;
+  autofill::CreditCard* selected_credit_card_;
 
   DISALLOW_COPY_AND_ASSIGN(PaymentRequest);
 };
 
 }  // namespace payments
 
 #endif  // COMPONENTS_PAYMENTS_PAYMENT_REQUEST_H_