Update Autofill Private API to provide a list of available countries.

chrome/browser/extensions/api/autofill_private/autofill_util.h

 // Copyright 2015 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 CHROME_BROWSER_EXTENSIONS_API_AUTOFILL_PRIVATE_AUTOFILL_UTIL_H_
 #define CHROME_BROWSER_EXTENSIONS_API_AUTOFILL_PRIVATE_AUTOFILL_UTIL_H_
 
 #include <map>
 #include <memory>
 #include <string>
 
 #include "base/macros.h"
 #include "chrome/common/extensions/api/autofill_private.h"
 #include "components/autofill/core/browser/personal_data_manager.h"
 
 namespace autofill {
 class AutofillProfile;
 class CreditCard;
 }
 
 namespace extensions {
 
 namespace autofill_util {
 
 using AddressEntryList = std::vector<api::autofill_private::AddressEntry>;
+using CountryEntryList = std::vector<api::autofill_private::CountryEntry>;
 using CreditCardEntryList = std::vector<api::autofill_private::CreditCardEntry>;
 
 // Uses |personal_data| to generate a list of up-to-date AddressEntry objects.
 AddressEntryList GenerateAddressList(
     const autofill::PersonalDataManager& personal_data);
 
+// Uses |personal_data| to generate a list of up-to-date CountryEntry objects.
+CountryEntryList GenerateCountryList(
+    const autofill::PersonalDataManager& personal_data);
+
 // Uses |personal_data| to generate a list of up-to-date CreditCardEntry
 // objects.
 CreditCardEntryList GenerateCreditCardList(
     const autofill::PersonalDataManager& personal_data);
 
 }  // namespace autofill_util
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_AUTOFILL_PRIVATE_AUTOFILL_UTIL_H_