[Payments] Do not show error on initial load of address screen

components/payments/content/payment_request_spec.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_CONTENT_PAYMENT_REQUEST_SPEC_H_
 #define COMPONENTS_PAYMENTS_CONTENT_PAYMENT_REQUEST_SPEC_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 103 matching lines @@
   friend class PaymentRequestDialogView;
   void add_observer_for_testing(Observer* observer_for_testing) {
     observer_for_testing_ = observer_for_testing;
   }
 
   // Validates the |method_data| and fills |supported_card_networks_|,
   // |supported_card_networks_set_| and |basic_card_specified_networks_|.
   void PopulateValidatedMethodData(
       const std::vector<mojom::PaymentMethodDataPtr>& method_data);
 
-  // Updates the selected_shipping_option based on the data passed to this
+  // Updates the |selected_shipping_option| based on the data passed to this
   // payment request by the website. This will set selected_shipping_option_ to
-  // the last option marked selected in the options array.
-  void UpdateSelectedShippingOption();
+  // the last option marked selected in the options array. If no options are
+  // provided and this method is called |after_update|, it means the merchant
+  // doesn't ship to this location. In this case,
+  // |selected_shipping_option_error_| will be set.
+  void UpdateSelectedShippingOption(bool after_update);
 
   // Will notify all observers that the spec has changed.
   void NotifyOnSpecUpdated();
 
   // Returns the CurrencyFormatter instance for this PaymentRequest.
   // |locale_name| should be the result of the browser's GetApplicationLocale().
   // Note: Having multiple currencies per PaymentRequest is not supported; hence
   // the CurrencyFormatter is cached here.
   CurrencyFormatter* GetOrCreateCurrencyFormatter(
       const std::string& currency_code,
@@ skipping 27 matching lines @@
   // notified.
   base::ObserverList<Observer> observers_;
   Observer* observer_for_testing_;
 
   DISALLOW_COPY_AND_ASSIGN(PaymentRequestSpec);
 };
 
 }  // namespace payments
 
 #endif  // COMPONENTS_PAYMENTS_CONTENT_PAYMENT_REQUEST_SPEC_H_