Move TranslateLanguageList to the Translate component

components/translate/core/browser/translate_download_manager.h

 // Copyright 2014 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 COMPONENTS_TRANSLATE_CORE_BROWER_TRANSLATE_DOWNLOAD_MANAGER_H_
 #define COMPONENTS_TRANSLATE_CORE_BROWER_TRANSLATE_DOWNLOAD_MANAGER_H_
 
 #include <string>
 
 #include "base/logging.h"
 #include "base/memory/ref_counted.h"
+#include "base/memory/scoped_ptr.h"
+#include "components/translate/core/browser/translate_language_list.h"
 #include "net/url_request/url_request_context_getter.h"
 
 template <typename T> struct DefaultSingletonTraits;
 
+class PrefService;
+
 // Manages the downloaded resources for Translate, such as the translate script
 // and the language list.
-// TODO(droger): TranslateDownloadManager should own TranslateLanguageList and
-// TranslateScript. See http://crbug.com/335074 and http://crbug.com/335077.
+// TODO(droger): TranslateDownloadManager should own TranslateScript.
+// See http://crbug.com/335074.
 class TranslateDownloadManager {
  public:
   // Returns the singleton instance.
   static TranslateDownloadManager* GetInstance();
 
   // The request context used to download the resources.
   // Should be set before this class can be used.
   net::URLRequestContextGetter* request_context() { return request_context_; }
   void set_request_context(net::URLRequestContextGetter* context) {
       request_context_ = context;
   }
 
   // The application locale.
   // Should be set before this class can be used.
   const std::string& application_locale() {
     DCHECK(!application_locale_.empty());
     return application_locale_;
   }
   void set_application_locale(const std::string& locale) {
     application_locale_ = locale;
   }
 
+  // The language list.
+  TranslateLanguageList* language_list() { return language_list_.get(); }
+
+  // Let the caller decide if and when we should fetch the language list from
+  // the translate server. This is a NOOP if switches::kDisableTranslate is set
+  // or if prefs::kEnableTranslate is set to false.
+  static void RequestLanguageList(PrefService* prefs);
+
+  // Fetches the language list from the translate server.
+  static void RequestLanguageList();
+
+  // Fills |languages| with the list of languages that the translate server can
+  // translate to and from.
+  static void GetSupportedLanguages(std::vector<std::string>* languages);
+
+  // Returns the last-updated time when Chrome receives a language list from a

[MAD, 2014/02/03 14:02:43]

receives -> received?

+  // Translate server. Returns null time if Chrome hasn't received any lists.
+  static base::Time GetSupportedLanguagesLastUpdated();
+
+  // Returns the language code that can be used with the Translate method for a
+  // specified |chrome_locale|.
+  static std::string GetLanguageCode(const std::string& chrome_locale);
+
+  // Returns true if |language| is supported by the translation server.
+  static bool IsSupportedLanguage(const std::string& language);
+
+  // Returns true if |language| is supported by the translation server as a
+  // alpha language.

[MAD, 2014/02/03 14:02:43]

a alpha -> an alpha?

+  static bool IsAlphaLanguage(const std::string& language);
+
+  // Must be called to shut Translate down. Cancels any pending fetches.
+  void Shutdown();
+
  private:
   friend struct DefaultSingletonTraits<TranslateDownloadManager>;
   TranslateDownloadManager();
   virtual ~TranslateDownloadManager();
 
+  scoped_ptr<TranslateLanguageList> language_list_;
   std::string application_locale_;
   scoped_refptr<net::URLRequestContextGetter> request_context_;
 };
 
 #endif  // COMPONENTS_TRANSLATE_CORE_BROWER_TRANSLATE_DOWNLOAD_MANAGER_H_