Adding new shipping address editor view to payment flow.

components/autofill/core/browser/country_combobox_model.h

 // Copyright (c) 2012 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_AUTOFILL_CORE_BROWSER_COUNTRY_COMBOBOX_MODEL_H_
 #define COMPONENTS_AUTOFILL_CORE_BROWSER_COUNTRY_COMBOBOX_MODEL_H_
 
 #include <memory>
 #include <string>
 #include <vector>
@@ skipping 20 matching lines @@
   // |manager| determines the default choice.
   void SetCountries(const PersonalDataManager& manager,
                     const base::Callback<bool(const std::string&)>& filter,
                     const std::string& app_locale);
 
   // ui::ComboboxModel implementation:
   int GetItemCount() const override;
   base::string16 GetItemAt(int index) override;
   bool IsItemSeparatorAt(int index) override;
 
+  // The list of countries always has the default country at the top as well as
+  // within the sorted vector.
   const CountryVector& countries() const { return countries_; }
 
   // Returns the default country code for this model.
   std::string GetDefaultCountryCode() const;
 
  private:
   // The countries to show in the model, including NULL for entries that are
   // not countries (the separator entry).
   CountryVector countries_;
 
   DISALLOW_COPY_AND_ASSIGN(CountryComboboxModel);
 };
 
 }  // namespace autofill
 
 #endif  // COMPONENTS_AUTOFILL_CORE_BROWSER_COUNTRY_COMBOBOX_MODEL_H_