MostVisitedSites: simplify prefs

components/ntp_tiles/most_visited_sites.h

 // Copyright 2013 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 COMPONENTS_NTP_TILES_MOST_VISITED_SITES_H_
 #define COMPONENTS_NTP_TILES_MOST_VISITED_SITES_H_
 
 #include <stddef.h>
 
 #include <memory>
@@ skipping 203 matching lines @@
   // suggestions if appropriate, and saves the new suggestions.
   void SaveNewSuggestions(SuggestionsVector personal_suggestions);
 
   // Workhorse for SaveNewSuggestions above. Implemented as a separate static
   // method for ease of testing.
   static SuggestionsVector MergeSuggestions(
       SuggestionsVector personal_suggestions,
       SuggestionsVector whitelist_suggestions,
       SuggestionsVector popular_suggestions);
 
-  void SaveCurrentSuggestionsToPrefs();
-
   // Notifies the observer about the availability of suggestions.
   // Also records impressions UMA if not done already.
   void NotifyMostVisitedURLsObserver();
 
   void OnPopularSitesAvailable(bool success);
 
   // Records thumbnail-related UMA histogram metrics.
   void RecordThumbnailUMAMetrics();
 
   // Records UMA histogram metrics related to the number of impressions.
@@ skipping 48 matching lines @@
 
   // For callbacks may be run after destruction.
   base::WeakPtrFactory<MostVisitedSites> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(MostVisitedSites);
 };
 
 }  // namespace ntp_tiles
 
 #endif  // COMPONENTS_NTP_TILES_MOST_VISITED_SITES_H_