Move TranslateLanguageList to the Translate component

chrome/browser/translate/translate_language_list.h

-// Copyright 2013 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 CHROME_BROWSER_TRANSLATE_TRANSLATE_LANGUAGE_LIST_H_
-#define CHROME_BROWSER_TRANSLATE_TRANSLATE_LANGUAGE_LIST_H_
-
-#include <set>
-#include <string>
-#include <vector>
-
-#include "base/memory/scoped_ptr.h"
-#include "base/time/time.h"
-#include "chrome/browser/web_resource/resource_request_allowed_notifier.h"
-
-class TranslateURLFetcher;
-
-// The TranslateLanguageList class is responsible for maintaining the latest
-// supporting language list.
-// This class is defined to be owned only by TranslateManager.
-class TranslateLanguageList : public ResourceRequestAllowedNotifier::Observer {
- public:
-  static const int kFetcherId = 1;
-
-  TranslateLanguageList();
-  virtual ~TranslateLanguageList();
-
-  // Returns the last-updated time when the language list is fetched from the
-  // Translate server. Returns null time if the list is yet to be fetched.
-  base::Time last_updated() { return last_updated_; }
-
-  // Fills |languages| with the list of languages that the translate server can
-  // translate to and from. |languages| will include alpha languages.
-  void GetSupportedLanguages(std::vector<std::string>* languages);
-
-  // Returns the language code that can be used with the Translate method for a
-  // specified |chrome_locale|.
-  std::string GetLanguageCode(const std::string& chrome_locale);
-
-  // Returns true if |language| is supported by the translation server. It also
-  // returns true against alpha languages.
-  bool IsSupportedLanguage(const std::string& language);
-
-  // Returns true if |language| is supported by the translation server as a
-  // alpha language.
-  bool IsAlphaLanguage(const std::string& language);
-
-  // Fetches the language list from the translate server. It will retry
-  // automatically when a server return 5xx errors and retry count doesn't
-  // reach to limits.
-  void RequestLanguageList();
-
-  // ResourceRequestAllowedNotifier::Observer implementation:
-  virtual void OnResourceRequestsAllowed() OVERRIDE;
-
-  // Disables the language list updater. This is used only for testing now.
-  static void DisableUpdate();
-
-  // static const values shared with our browser tests.
-  static const char kLanguageListCallbackName[];
-  static const char kTargetLanguagesKey[];
-  static const char kAlphaLanguagesKey[];
-
- private:
-  // Callback function called when TranslateURLFetcher::Request() is finished.
-  void OnLanguageListFetchComplete(int id,
-                                   bool success,
-                                   const std::string& data);
-
-  // All the languages supported by the translation server.
-  std::set<std::string> all_supported_languages_;
-
-  // Alpha languages supported by the translation server.
-  std::set<std::string> alpha_languages_;
-
-  // A LanguageListFetcher instance to fetch a server providing supported
-  // language list including alpha languages.
-  scoped_ptr<TranslateURLFetcher> language_list_fetcher_;
-
-  // The last-updated time when the language list is sent.
-  base::Time last_updated_;
-
-  // Helper class to know if it's allowed to make network resource requests.
-  ResourceRequestAllowedNotifier resource_request_allowed_notifier_;
-
-  DISALLOW_COPY_AND_ASSIGN(TranslateLanguageList);
-};
-
-#endif  // CHROME_BROWSER_TRANSLATE_TRANSLATE_LANGUAGE_LIST_H_