Remove PrefServiceSimple, replacing it with PrefService and PrefRegistrySimple.

chrome/browser/profiles/profile_info_cache.h

Index: chrome/browser/profiles/profile_info_cache.h
diff --git a/chrome/browser/profiles/profile_info_cache.h b/chrome/browser/profiles/profile_info_cache.h
index 9a6a9fd1313cc3293eeb8b1ef3f38b729a936492..0c3ea6358f7c263ef5afeb3187a527b5f59f17b4 100644
--- a/chrome/browser/profiles/profile_info_cache.h
+++ b/chrome/browser/profiles/profile_info_cache.h
@@ -27,7 +27,7 @@ class DictionaryValue;
 }
 
 class PrefService;
-class PrefServiceSimple;
+class PrefRegistrarSimple;
 
 // This class saves various information about profiles to local preferences.
 // This cache can be used to display a list of profiles without having to
@@ -127,7 +127,7 @@ class ProfileInfoCache : public ProfileInfoInterface,
   static std::vector<string16> GetProfileNames();
 
   // Register cache related preferences in Local State.
-  static void RegisterPrefs(PrefServiceSimple* prefs);
+  static void RegisterPrefs(PrefRegistrarSimple* prefs);
 
   void AddObserver(ProfileInfoCacheObserver* obs);
   void RemoveObserver(ProfileInfoCacheObserver* obs);