Eliminate sending NOTIFICATION_HISTORY_KEYWORD_SEARCH_TERM_DELETED

chrome/browser/history/history_notifications.h

Index: chrome/browser/history/history_notifications.h
diff --git a/chrome/browser/history/history_notifications.h b/chrome/browser/history/history_notifications.h
index 84c3720e4ff7df70e9f25bb71ac5a9e33e878915..564ee90ad53730c637a70c96ce8d3c6f391c733b 100644
--- a/chrome/browser/history/history_notifications.h
+++ b/chrome/browser/history/history_notifications.h
@@ -48,15 +48,6 @@ struct URLsDeletedDetails : public HistoryDetails {
   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__