Split PrefService into PrefService, PrefServiceSimple and PrefServiceSyncable.

chrome/browser/chromeos/language_preferences.h

Index: chrome/browser/chromeos/language_preferences.h
diff --git a/chrome/browser/chromeos/language_preferences.h b/chrome/browser/chromeos/language_preferences.h
index 237b130cbfd296a29af9fc81464700c25c784675..19c0031557a1cebc1e5779231930477b2f950d19 100644
--- a/chrome/browser/chromeos/language_preferences.h
+++ b/chrome/browser/chromeos/language_preferences.h
@@ -36,7 +36,7 @@ struct LanguageMultipleChoicePreference {
     int item_message_id;  // Resource grd ID for the combobox item.
   } values_and_ids[kMaxItems];
   int label_message_id;  // Resource grd ID for the label.
-  PrefService::PrefSyncStatus sync_status;
+  PrefServiceSyncable::PrefSyncStatus sync_status;
 };
 
 // The struct is used for preferences of boolean values, like switches to
@@ -46,7 +46,7 @@ struct LanguageBooleanPrefs {
   bool default_pref_value;
   const char* ibus_config_name;
   int message_id;
-  PrefService::PrefSyncStatus sync_status;
+  PrefServiceSyncable::PrefSyncStatus sync_status;
 };
 
 // The struct is used for preferences of integer range values, like the
@@ -58,7 +58,7 @@ struct LanguageIntegerRangePreference {
   int max_pref_value;
   const char* ibus_config_name;
   int message_id;
-  PrefService::PrefSyncStatus sync_status;
+  PrefServiceSyncable::PrefSyncStatus sync_status;
 };
 
 // ---------------------------------------------------------------------------
@@ -123,7 +123,7 @@ struct PinyinIntegerPref {
   const char* pref_name;  // Chrome preference name.
   int default_pref_value;
   const char* ibus_config_name;
-  PrefService::PrefSyncStatus sync_status;
+  PrefServiceSyncable::PrefSyncStatus sync_status;
   // TODO(yusukes): Add message_id if needed.
 };
 
@@ -161,7 +161,7 @@ extern const int kXkbAutoRepeatIntervalInMs;
 extern const char kPreferredKeyboardLayout[];
 
 // Registers non-user prefs for the default keyboard layout on the login screen.
-void RegisterPrefs(PrefService* local_state);
+void RegisterPrefs(PrefServiceSimple* local_state);
 
 }  // language_prefs
 }  // chromeos