[Payments] Format shipping and billing phone number in normalizer.

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>
@@ skipping 35 matching lines @@
 // 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);
 
+// Formats the given number |phone_number| to
+// i18n::phonenumbers::PhoneNumberUtil::PhoneNumberFormat::INTERNATIONAL format
+// by using i18n::phonenumbers::PhoneNumberUtil::Format.
+std::string FormatPhoneForDisplay(const std::string& phone_number,
+                                  const std::string& country_code);
+
+// Formats the given number |phone_number| to
+// i18n::phonenumbers::PhoneNumberUtil::PhoneNumberFormat::E164 format by using
+// i18n::phonenumbers::PhoneNumberUtil::Format, as defined in the Payment
+// Request spec
+// (https://w3c.github.io/browser-payment-api/#paymentrequest-updated-algorithm)
+std::string FormatPhoneForResponse(const std::string& phone_number,
+                                   const std::string& country_code);
+
 }  // namespace data_util
 }  // namespace payments
 
 #endif  // COMPONENTS_PAYMENTS_CORE_PAYMENT_REQUEST_DATA_UTIL_H_