[Payments] Better default selections on iOS

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 <memory>
 #include <set>
 #include <string>
 #include <vector>
 
 #include "base/macros.h"
 #include "components/payments/core/payment_options_provider.h"
+#include "components/payments/core/payments_profile_comparator.h"
 #include "ios/web/public/payments/payment_request.h"
 
 namespace autofill {
 class AutofillProfile;
 class CreditCard;
 class PersonalDataManager;
 }  // namespace autofill
 
 namespace payments {
 class CurrencyFormatter;
@@ skipping 176 matching lines @@
   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_;
 
+  payments::PaymentsProfileComparator profile_comparator_;
+
   DISALLOW_COPY_AND_ASSIGN(PaymentRequest);
 };
 
 #endif  // IOS_CHROME_BROWSER_PAYMENTS_PAYMENT_REQUEST_H_