Move TranslateLanguageList to the Translate component

components/translate/core/browser/translate_download_manager.h

Index: components/translate/core/browser/translate_download_manager.h
diff --git a/components/translate/core/browser/translate_download_manager.h b/components/translate/core/browser/translate_download_manager.h
index a36ae235ccbae280a9d5ecfe0cbb5edbabc2442b..c1f9164a33ebfa96fe8b777979295c61f007d7e2 100644
--- a/components/translate/core/browser/translate_download_manager.h
+++ b/components/translate/core/browser/translate_download_manager.h
@@ -9,14 +9,18 @@
 
 #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.
@@ -39,11 +43,45 @@ class TranslateDownloadManager {
     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 received a language list from a
+  // 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 an
+  // alpha language.
+  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_;
 };