[Payments] Use PaymentInstrument/AutofillPaymentInstrument throughout.

components/payments/content/payment_request_spec.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_spec.h"
 
 #include <utility>
 
 #include "base/logging.h"
 
@@ skipping 106 matching lines @@
             auto card_it = card_networks.find(networks[supported_network]);
             if (card_it != card_networks.end()) {
               supported_card_networks_.push_back(networks[supported_network]);
               card_networks.erase(card_it);
             }
           }
         }
       }
     }
   }
+
+  supported_card_networks_set_.insert(supported_card_networks_.begin(),
+                                      supported_card_networks_.end());
 }
 
 void PaymentRequestSpec::NotifyOnInvalidSpecProvided() {
   for (auto& observer : observers_)
     observer.OnInvalidSpecProvided();
 }
 
 CurrencyFormatter* PaymentRequestSpec::GetOrCreateCurrencyFormatter(
     const std::string& currency_code,
     const std::string& currency_system,
     const std::string& locale_name) {
   if (!currency_formatter_) {
     currency_formatter_.reset(
         new CurrencyFormatter(currency_code, currency_system, locale_name));
   }
   return currency_formatter_.get();
 }
 
 }  // namespace payments