Eliminate sending NOTIFICATION_HISTORY_KEYWORD_SEARCH_TERM_DELETED

chrome/browser/history/history_notifications.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.
 
 // Structs that hold data used in broadcasting notifications.
 
 #ifndef CHROME_BROWSER_HISTORY_HISTORY_NOTIFICATIONS_H__
 #define CHROME_BROWSER_HISTORY_HISTORY_NOTIFICATIONS_H__
 
 #include <set>
@@ skipping 30 matching lines @@
   // indicating that a subset of history has been deleted. The rows will have
   // the IDs that had been in effect before the deletion in the main history
   // database.
   URLRows rows;
 
   // The list of deleted favicon urls. This is valid only when |all_history| is
   // false, indicating that a subset of history has been deleted.
   std::set<GURL> favicon_urls;
 };
 
-// Details for HISTORY_KEYWORD_SEARCH_TERM_DELETED.
-struct KeywordSearchDeletedDetails : public HistoryDetails {
-  explicit KeywordSearchDeletedDetails(URLID url_row_id);
-  ~KeywordSearchDeletedDetails() override;
-
-  // The ID of the corresponding URLRow in the main history database.
-  URLID url_row_id;
-};
-
 }  // namespace history
 
 #endif  // CHROME_BROWSER_HISTORY_HISTORY_NOTIFICATIONS_H__