Use upstream libaddressinput in Chrome.

third_party/libaddressinput/chromium/cpp/include/libaddressinput/storage.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.
-//
-// The interface to be implemented by the user of the library to enable storing
-// the downloaded validation rules (e.g. on disk).
-
-#ifndef I18N_ADDRESSINPUT_STORAGE_H_
-#define I18N_ADDRESSINPUT_STORAGE_H_
-
-#include <libaddressinput/callback.h>
-#include <libaddressinput/util/scoped_ptr.h>
-
-#include <string>
-
-namespace i18n {
-namespace addressinput {
-
-// Stores downloaded validation rules. Sample usage:
-//    class MyStorage : public Storage {
-//     public:
-//      virtual void Put(const std::string& key, const std::string& data) {
-//        ...
-//      }
-//
-//      virtual void Get(const std::string& key,
-//                       scoped_ptr<Callback> data_ready) const {
-//        bool success = ...
-//        std::string data = ...
-//        (*data_ready)(success, key, data);
-//      }
-//    };
-class Storage {
- public:
-  typedef i18n::addressinput::Callback<void(std::string, std::string)> Callback;
-
-  virtual ~Storage() {}
-
-  // Stores |data| for |key|.
-  virtual void Put(const std::string& key, scoped_ptr<std::string> data) = 0;
-
-  // Retrieves the data for |key| and invokes the |data_ready| callback.
-  virtual void Get(const std::string& key,
-                   scoped_ptr<Callback> data_ready) const = 0;
-};
-
-}  // namespace addressinput
-}  // namespace i18n
-
-#endif  // I18N_ADDRESSINPUT_STORAGE_H_