[Payments] iOS: Support basic-card

ios/chrome/browser/payments/payment_request.h

 // Copyright 2017 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 IOS_CHROME_BROWSER_PAYMENTS_PAYMENT_REQUEST_H_
 #define IOS_CHROME_BROWSER_PAYMENTS_PAYMENT_REQUEST_H_
 
+#include <set>
 #include <vector>
 
 #include "base/macros.h"
 #include "ios/web/public/payments/payment_request.h"
 
 namespace autofill {
 class AutofillProfile;
 class CreditCard;
 class PersonalDataManager;
 }  // namespace autofill
@@ skipping 75 matching lines @@
   // Returns the available autofill profiles for this user to be used as
   // billing profiles.
   const std::vector<autofill::AutofillProfile*>& billing_profiles() const {
     return shipping_profiles_;
   }
 
   const std::vector<std::string>& supported_card_networks() const {
     return supported_card_networks_;
   }
 
+  const std::set<std::string>& basic_card_specified_networks() const {
+    return basic_card_specified_networks_;
+  }
+
   // Adds |credit_card| to the list of cached credit cards and returns a pointer
   // to the cached copy.
   virtual autofill::CreditCard* AddCreditCard(
       const autofill::CreditCard& credit_card);
 
   // Returns the available autofill credit cards for this user that match a
   // supported type specified in |web_payment_request_|.
   const std::vector<autofill::CreditCard*>& credit_cards() const {
     return credit_cards_;
   }
@@ skipping 58 matching lines @@
 
   // Credit cards returnd by the Data Manager may change due to (e.g.)
   // sync events, meaning PaymentRequest may outlive them. Therefore, credit
   // cards are fetched once and their copies are cached here. Whenever credit
   // cards are requested a vector of pointers to these copies are returned.
   std::vector<autofill::CreditCard> credit_card_cache_;
 
   std::vector<autofill::CreditCard*> credit_cards_;
   autofill::CreditCard* selected_credit_card_;
 
-  // A vector of supported basic card networks.
+  // A vector of supported basic card networks. This encompasses everything that
+  // the merchant supports and should be used for support checks.
   std::vector<std::string> supported_card_networks_;
+  // A subset of |supported_card_networks_| which is only the networks that have
+  // been specified as part of the "basic-card" supported method. Callers should
+  // use |supported_card_networks_| for merchant support checks.
+  std::set<std::string> basic_card_specified_networks_;
 
   // A vector of pointers to the shipping options in |web_payment_request_|.
   std::vector<web::PaymentShippingOption*> shipping_options_;
   web::PaymentShippingOption* selected_shipping_option_;
 
   DISALLOW_COPY_AND_ASSIGN(PaymentRequest);
 };
 
 #endif  // IOS_CHROME_BROWSER_PAYMENTS_PAYMENT_REQUEST_H_