[rac] Add AddressValidator API.

third_party/libaddressinput/chromium/cpp/include/libaddressinput/load_rules_delegate.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_LOAD_RULES_DELEGATE_H_
+#define I18N_ADDRESSINPUT_LOAD_RULES_DELEGATE_H_
+
+#include <string>
+
+namespace i18n {
+namespace addressinput {
+
+// The object to be notified when loading of address validation rules is
+// finished.
+class LoadRulesDelegate {
+ public:
+  virtual ~LoadRulesDelegate() {}
+
+  // Called when the validation rules for the |country_code| have been loaded.
+  // The validation rules include the generic rules for the |country_code| and
+  // specific rules for the country's administrative areas, localities, and
+  // dependent localities. If a country has language-specific validation rules,
+  // then these are also loaded.
+  //
+  // The |success| parameter is true when the rules were loaded successfully.
+  virtual void OnAddressValidationRulesLoaded(const std::string& country_code,
+                                              bool success) = 0;
+};
+
+}  // namespace addressinput
+}  // namespace i18n
+
+#endif  // I18N_ADDRESSINPUT_LOAD_RULES_DELEGATE_H_