Introduce PrefRegistrySyncable, simplifying PrefServiceSyncable.

chrome/browser/translate/translate_prefs.h

 // Copyright (c) 2010 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_PREFS_H_
 #define CHROME_BROWSER_TRANSLATE_TRANSLATE_PREFS_H_
 
 #include <string>
 
 #include "googleurl/src/gurl.h"
 
+class PrefRegistrySyncable;
 class PrefService;
-class PrefServiceSyncable;
 
 namespace base {
 class DictionaryValue;
 class ListValue;
 }
 
 class TranslatePrefs {
  public:
   static const char kPrefTranslateLanguageBlacklist[];
   static const char kPrefTranslateSiteBlacklist[];
@@ skipping 29 matching lines @@
   // translation for a specific language. (So we can present a UI to white-list
   // that langueg if the user keeps accepting translations).
   int GetTranslationAcceptedCount(const std::string& language);
   void IncrementTranslationAcceptedCount(const std::string& language);
   void ResetTranslationAcceptedCount(const std::string& language);
 
   static bool CanTranslate(PrefService* user_prefs,
       const std::string& original_language, const GURL& url);
   static bool ShouldAutoTranslate(PrefService* user_prefs,
       const std::string& original_language, std::string* target_language);
-  static void RegisterUserPrefs(PrefServiceSyncable* user_prefs);
+  static void RegisterUserPrefs(PrefService* prefs,
+                                PrefRegistrySyncable* registry);
 
  private:
   static void MigrateTranslateWhitelists(PrefService* user_prefs);
   bool IsValueBlacklisted(const char* pref_id, const std::string& value);
   void BlacklistValue(const char* pref_id, const std::string& value);
   void RemoveValueFromBlacklist(const char* pref_id, const std::string& value);
   bool IsValueInList(const base::ListValue* list, const std::string& value);
   bool IsLanguageWhitelisted(const std::string& original_language,
       std::string* target_language);
 
   // Retrieves the dictionary mapping the number of times translation has been
   // denied for a language, creating it if necessary.
   base::DictionaryValue* GetTranslationDeniedCountDictionary();
 
   // Retrieves the dictionary mapping the number of times translation has been
   // accepted for a language, creating it if necessary.
   base::DictionaryValue* GetTranslationAcceptedCountDictionary();
 
   PrefService* prefs_;  // Weak.
 };
 
 #endif  // CHROME_BROWSER_TRANSLATE_TRANSLATE_PREFS_H_