Remove Chrome's own version of libaddressinput in favor of the upstream.

third_party/libaddressinput/chromium/cpp/src/retriever.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.
-//
-// An object to retrieve data.
-
-#ifndef I18N_ADDRESSINPUT_RETRIEVER_H_
-#define I18N_ADDRESSINPUT_RETRIEVER_H_
-
-#include <libaddressinput/callback.h>
-#include <libaddressinput/util/basictypes.h>
-#include <libaddressinput/util/scoped_ptr.h>
-
-#include <map>
-#include <string>
-
-namespace i18n {
-namespace addressinput {
-
-class Downloader;
-class Storage;
-
-// Manages downloading data and caching it locally. Sample usage:
-//    scoped_ptr<Downloader> downloader(new Downloader);
-//    scoped_ptr<Storage> storage(new Storage);
-//    Retriever retriever("https://i18napis.appspot.com/ssl-aggregate-address/",
-//                        downloader.Pass(), storage.Pass());
-//    retriever.Retrieve("data/CA/AB--fr",
-//                       BuildCallback(this, &MyClass::OnDataRetrieved));
-class Retriever {
- public:
-  // The return value indicates whether the data is valid (should be kept) or is
-  // invalid (should be discarded).
-  typedef i18n::addressinput::Callback<bool(std::string, std::string)> Callback;
-
-  Retriever(const std::string& validation_data_url,
-            scoped_ptr<Downloader> downloader,
-            scoped_ptr<Storage> storage);
-  ~Retriever();
-
-  // Retrieves the data for |key| and invokes the |retrieved| callback. Checks
-  // for the data in storage first. If storage does not have the data for |key|,
-  // then downloads the data and places it in storage.
-  void Retrieve(const std::string& key, scoped_ptr<Callback> retrieved);
-
- private:
-  friend class RetrieverTest;
-
-  // Callback for when a rule is retrieved from |storage_|.
-  void OnDataRetrievedFromStorage(bool success,
-                                  const std::string& key,
-                                  const std::string& stored_data);
-
-  // Callback for when a rule is retrieved by |downloader_|.
-  void OnDownloaded(bool success,
-                    const std::string& url,
-                    scoped_ptr<std::string> downloaded_data);
-
-  // Returns the URL where the |key| can be retrieved. For example, returns
-  // "https://i18napis.appspot.com/ssl-aggregate-address/data/US" for input
-  // "data/US". Assumes that the input string is a valid URL segment.
-  std::string GetUrlForKey(const std::string& key) const;
-
-  // Returns the key for the |url|. For example, returns "data/US" for
-  // "https://i18napis.appspot.com/ssl-aggregate-address/data/US". If the |url|
-  // does not start with |validation_data_url| that was passed to the
-  // constructor, then returns an empty string. (This can happen if the user of
-  // the library returns a bad URL in their Downloader implementation.)
-  std::string GetKeyForUrl(const std::string& url) const;
-
-  // Returns true if the |url| starts with |validation_data_url| that was passed
-  // to the constructor.
-  bool IsValidationDataUrl(const std::string& url) const;
-
-  // Looks up the callback for |key| in |requests_|, removes it from the map and
-  // invokes it with |key|, |success|, and |data| parameters.
-  bool InvokeCallbackForKey(const std::string& key,
-                            bool success,
-                            const std::string& data);
-
-  const std::string validation_data_url_;
-  scoped_ptr<Downloader> downloader_;
-  scoped_ptr<Storage> storage_;
-
-  // Holds pending requests. The callback pointers are owned.
-  std::map<std::string, Callback*> requests_;
-
-  // Holds data from storage that has expired timestamps. If a download fails,
-  // then this data is used as fallback.
-  std::map<std::string, std::string> stale_data_;
-
-  DISALLOW_COPY_AND_ASSIGN(Retriever);
-};
-
-}  // namespace addressinput
-}  // namespace i18n
-
-#endif  // I18N_ADDRESSINPUT_RETRIEVER_H_