[rac] Parse postal code formats and required fields in libaddressinput.

third_party/libaddressinput/chromium/cpp/src/address_field_util.h

-// Copyright (C) 2013 Google Inc.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-#ifndef I18N_ADDRESSINPUT_ADDRESS_FIELD_UTIL_H_
-#define I18N_ADDRESSINPUT_ADDRESS_FIELD_UTIL_H_
-
-#include <libaddressinput/address_field.h>
-
-#include <string>
-#include <vector>
-
-namespace i18n {
-namespace addressinput {
-
-// An extension of AddressField enum used only internally. The values are
-// negative to avoid clashing with the values in AddressField.
-enum {
-  NEWLINE = -1
-};
-
-// Clears |fields|, parses |format|, and adds the format address fields to
-// |fields|. The |fields| may also contain NEWLINE elements. For example, parses
-// "%S%C%n%D%X" into {ADMIN_AREA, LOCALITY, NEWLINE, DEPENDENT_LOCALITY,
-// SORTING_CODE}.
-void ParseAddressFieldsFormat(const std::string& format,
-                              std::vector<AddressField>* fields);
-
-}  // namespace addressinput
-}  // namespace i18n
-
-#endif  // I18N_ADDRESSINPUT_ADDRESS_FIELD_UTIL_H_