Change FaviconData to be able to return data for multiple bitmaps for same icon URL

chrome/browser/history/history.h

 // Copyright (c) 2012 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_HISTORY_HISTORY_H_
 #define CHROME_BROWSER_HISTORY_HISTORY_H_
 
 #include <set>
 #include <vector>
 
@@ skipping 685 matching lines @@
   void UpdateFaviconMappingAndFetch(FaviconService::GetFaviconRequest* request,
                                     const GURL& page_url,
                                     const GURL& icon_url,
                                     history::IconType icon_type);
 
   // Used by the FaviconService to get a favicon from the history backend.
   void GetFaviconForURL(FaviconService::GetFaviconRequest* request,
                         const GURL& page_url,
                         int icon_types);
 
-  // Used by the FaviconService to get a favicon from the history backend.
-  void GetFaviconForID(FaviconService::GetFaviconRequest* request,
-                       history::FaviconID id);
-
   // Used by the FaviconService to mark the favicon for the page as being out
   // of date.
   void SetFaviconOutOfDateForPage(const GURL& page_url);
 
   // Used by the FaviconService to clone favicons from one page to another,
   // provided that other page does not already have favicons.
   void CloneFavicon(const GURL& old_page_url, const GURL& new_page_url);
 
   // Used by the FaviconService for importing many favicons for many pages at
   // once. The pages must exist, any favicon sets for unknown pages will be
@@ skipping 230 matching lines @@
   // The index used for quick history lookups.
   scoped_ptr<history::InMemoryURLIndex> in_memory_url_index_;
 
   scoped_refptr<ObserverListThreadSafe<history::VisitDatabaseObserver> >
       visit_database_observers_;
 
   DISALLOW_COPY_AND_ASSIGN(HistoryService);
 };
 
 #endif  // CHROME_BROWSER_HISTORY_HISTORY_H_