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

chrome/browser/history/history.cc

 // 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.
 
 // The history system runs on a background thread so that potentially slow
 // database operations don't delay the browser. This backend processing is
 // represented by HistoryBackend. The HistoryService's job is to dispatch to
 // that thread.
 //
 // Main thread                       History thread
@@ skipping 497 matching lines @@
 }
 
 void HistoryService::GetFaviconForURL(
     FaviconService::GetFaviconRequest* request,
     const GURL& page_url,
     int icon_types) {
   Schedule(PRIORITY_NORMAL, &HistoryBackend::GetFaviconForURL, NULL, request,
            page_url, icon_types);
 }
 
-void HistoryService::GetFaviconForID(FaviconService::GetFaviconRequest* request,
-                                     history::FaviconID id) {
-  Schedule(PRIORITY_NORMAL, &HistoryBackend::GetFaviconForID, NULL, request,
-           id);
-}
-
 void HistoryService::SetFavicon(const GURL& page_url,
                                 const GURL& icon_url,
                                 const std::vector<unsigned char>& image_data,
                                 history::IconType icon_type) {
   if (!CanAddURL(page_url))
     return;
 
   ScheduleAndForget(PRIORITY_NORMAL, &HistoryBackend::SetFavicon,
       page_url, icon_url,
       scoped_refptr<base::RefCountedMemory>(
@@ skipping 405 matching lines @@
 void HistoryService::RemoveVisitDatabaseObserver(
     history::VisitDatabaseObserver* observer) {
   visit_database_observers_->RemoveObserver(observer);
 }
 
 void HistoryService::NotifyVisitDBObserversOnAddVisit(
     const history::BriefVisitInfo& info) {
   visit_database_observers_->Notify(
       &history::VisitDatabaseObserver::OnAddVisit, info);
 }