Remove unused ThumbnailDatabase::UpdateIconMapping() and ThumbnailDatabase::CloneIconMappings()

components/history/core/browser/history_backend.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 COMPONENTS_HISTORY_CORE_BROWSER_HISTORY_BACKEND_H_
 #define COMPONENTS_HISTORY_CORE_BROWSER_HISTORY_BACKEND_H_
 
 #include <set>
 #include <string>
 #include <utility>
@@ skipping 282 matching lines @@
                     scoped_refptr<base::RefCountedMemory> bitmap_data,
                     const gfx::Size& pixel_size);
 
   void SetFavicons(const GURL& page_url,
                    favicon_base::IconType icon_type,
                    const GURL& icon_url,
                    const std::vector<SkBitmap>& bitmaps);
 
   void SetFaviconsOutOfDateForPage(const GURL& page_url);
 
-  void CloneFavicons(const GURL& old_page_url, const GURL& new_page_url);
-
   void SetImportedFavicons(
       const favicon_base::FaviconUsageDataList& favicon_usage);
 
   // Downloads -----------------------------------------------------------------
 
   uint32 GetNextDownloadId();
   void QueryDownloads(std::vector<DownloadRow>* rows);
   void UpdateDownload(const DownloadRow& data);
   bool CreateDownload(const DownloadRow& history_info);
   void RemoveDownloads(const std::set<uint32>& ids);
@@ skipping 183 matching lines @@
                            UpdateFaviconMappingsAndFetchMultipleIconTypes);
   FRIEND_TEST_ALL_PREFIXES(HistoryBackendTest, GetFaviconsFromDBEmpty);
   FRIEND_TEST_ALL_PREFIXES(HistoryBackendTest,
                            GetFaviconsFromDBNoFaviconBitmaps);
   FRIEND_TEST_ALL_PREFIXES(HistoryBackendTest,
                            GetFaviconsFromDBSelectClosestMatch);
   FRIEND_TEST_ALL_PREFIXES(HistoryBackendTest, GetFaviconsFromDBIconType);
   FRIEND_TEST_ALL_PREFIXES(HistoryBackendTest, GetFaviconsFromDBExpired);
   FRIEND_TEST_ALL_PREFIXES(HistoryBackendTest,
                            UpdateFaviconMappingsAndFetchNoDB);
-  FRIEND_TEST_ALL_PREFIXES(HistoryBackendTest,
-                           CloneFaviconIsRestrictedToSameDomain);
   FRIEND_TEST_ALL_PREFIXES(HistoryBackendTest, QueryFilteredURLs);
   FRIEND_TEST_ALL_PREFIXES(HistoryBackendTest, UpdateVisitDuration);
   FRIEND_TEST_ALL_PREFIXES(HistoryBackendTest, ExpireHistoryForTimes);
   FRIEND_TEST_ALL_PREFIXES(HistoryBackendTest, DeleteFTSIndexDatabases);
   FRIEND_TEST_ALL_PREFIXES(ProfileSyncServiceTypedUrlTest,
                            ProcessUserChangeRemove);
   friend class ::TestingProfile;
 
   // Computes the name of the specified database on disk.
   base::FilePath GetArchivedFileName() const;
@@ skipping 305 matching lines @@
 
   // List of observers
   ObserverList<HistoryBackendObserver> observers_;
 
   DISALLOW_COPY_AND_ASSIGN(HistoryBackend);
 };
 
 }  // namespace history
 
 #endif  // COMPONENTS_HISTORY_CORE_BROWSER_HISTORY_BACKEND_H_