Split PrefService into PrefService, PrefServiceSimple and PrefServiceSyncable.

chrome/browser/ui/webui/ntp/new_tab_page_handler.h

Index: chrome/browser/ui/webui/ntp/new_tab_page_handler.h
diff --git a/chrome/browser/ui/webui/ntp/new_tab_page_handler.h b/chrome/browser/ui/webui/ntp/new_tab_page_handler.h
index 2a580105f5b22f7ac0b3abc787aa9f8fd6cad302..9db1182b29ac50043398a08fffad0b3b0ca524fa 100644
--- a/chrome/browser/ui/webui/ntp/new_tab_page_handler.h
+++ b/chrome/browser/ui/webui/ntp/new_tab_page_handler.h
@@ -9,7 +9,8 @@
 #include "chrome/common/chrome_notification_types.h"
 #include "content/public/browser/web_ui_message_handler.h"
 
-class PrefService;
+class PrefServiceSimple;
+class PrefServiceSyncable;
 class Profile;
 
 // Handler for general New Tab Page functionality that does not belong in a
@@ -19,10 +20,7 @@ class NewTabPageHandler : public content::WebUIMessageHandler {
   NewTabPageHandler();
 
   // Register NTP per-profile preferences.
-  static void RegisterUserPrefs(PrefService* prefs);
-
-  // Register NTP profile-independent preferences.
-  static void RegisterPrefs(PrefService* prefs);
+  static void RegisterUserPrefs(PrefServiceSyncable* prefs);
 
   // Registers values (strings etc.) for the page.
   static void GetLocalizedValues(Profile* profile, DictionaryValue* values);