[Payments] Move parsing the PaymentMethodData to "core"

components/payments/core/payment_request_data_util.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 COMPONENTS_PAYMENTS_CORE_PAYMENT_REQUEST_DATA_UTIL_H_
 #define COMPONENTS_PAYMENTS_CORE_PAYMENT_REQUEST_DATA_UTIL_H_
 
+#include <set>
 #include <string>
 #include <vector>
 
 #include "base/strings/string16.h"
 
 namespace autofill {
 class AutofillProfile;
 class CreditCard;
 }  // namespace autofill
 
 namespace payments {
 
 struct BasicCardResponse;
 struct PaymentAddress;
+class PaymentMethodData;
 
 namespace data_util {
 
 // Helper function to get an instance of web::PaymentAddress from an autofill
 // profile.
 PaymentAddress GetPaymentAddressFromAutofillProfile(
     const autofill::AutofillProfile& profile,
     const std::string& app_locale);
 
 // Helper function to get an instance of web::BasicCardResponse from an autofill
 // credit card.
 BasicCardResponse GetBasicCardResponseFromAutofillCreditCard(
     const autofill::CreditCard& card,
     const base::string16& cvc,
     const std::vector<autofill::AutofillProfile*>& billing_profiles,
     const std::string& app_locale);
 
+// Parse the supported card networks from supportedMethods and  "basic-card"'s
+// supportedNetworks. |out_supported_networks| is filled with list of networks
+// in the order that they were specified by the merchant.
+// |out_basic_card_supported_networks| is a subset of |out_supported_networks|
+// that includes all networks that were specified as part of "basic-card". This
+// is used to know whether to return the card network name (e.g., "visa") or
+// "basic-card" in the PaymentResponse. Returns true on success, false on
+// invalid data specified. |method_data.supported_networks| is expected to only
+// contain basic-card card network names (the list is at
+// https://www.w3.org/Payments/card-network-ids).
+bool ParseBasicCardSupportedNetworks(
+    const std::vector<PaymentMethodData>& method_data,
+    std::vector<std::string>* out_supported_networks,
+    std::set<std::string>* out_basic_card_supported_networks);
+
 }  // namespace data_util
 }  // namespace payments
 
 #endif  // COMPONENTS_PAYMENTS_CORE_PAYMENT_REQUEST_DATA_UTIL_H_