Cleanup FaviconSQLHandler::Update

chrome/browser/history/thumbnail_database.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_THUMBNAIL_DATABASE_H_
 #define CHROME_BROWSER_HISTORY_THUMBNAIL_DATABASE_H_
 
 #include <vector>
 
 #include "base/gtest_prod_util.h"
@@ skipping 186 matching lines @@
 
   // Updates the page and icon mapping for the given mapping_id with the given
   // icon_id.
   // Returns true if the update succeeded.
   bool UpdateIconMapping(IconMappingID mapping_id, FaviconID icon_id);
 
   // Deletes the icon mapping entries for the given page url.
   // Returns true if the deletion succeeded.
   bool DeleteIconMappings(const GURL& page_url);
 
+  // Deletes the icon mapping with |mapping_id|.
+  // Returns true if the deletion succeeded.
+  bool DeleteIconMapping(IconMappingID mapping_id);
+
   // Checks whether a favicon is used by any URLs in the database.
   bool HasMappingFor(FaviconID id);
 
   // Clones the existing mappings from |old_page_url| if |new_page_url| has no
   // mappings. Otherwise, will leave mappings alone.
   bool CloneIconMappings(const GURL& old_page_url, const GURL& new_page_url);
 
   // The class to enumerate icon mappings. Use InitIconMappingEnumerator to
   // initialize.
   class IconMappingEnumerator {
@@ skipping 164 matching lines @@
   const HistoryPublisher* history_publisher_;
 
   // True if migration to TopSites has been done and the thumbnails
   // table should not be used.
   bool use_top_sites_;
 };
 
 }  // namespace history
 
 #endif  // CHROME_BROWSER_HISTORY_THUMBNAIL_DATABASE_H_