Eliminate sending NOTIFICATION_HISTORY_KEYWORD_SEARCH_TERM_DELETED

components/history/core/browser/history_service_observer.h

Index: components/history/core/browser/history_service_observer.h
diff --git a/components/history/core/browser/history_service_observer.h b/components/history/core/browser/history_service_observer.h
index 9ea82e27900ebccd30486097e8d815a2dd04ec17..834f39b47d20ca4d7623dce43df94b4954da20ff 100644
--- a/components/history/core/browser/history_service_observer.h
+++ b/components/history/core/browser/history_service_observer.h
@@ -58,6 +58,11 @@ class HistoryServiceObserver {
                                           KeywordID keyword_id,
                                           const base::string16& term) {}
 
+  // Sent when a keyword search term is deleted.
+  // |url_id| is the id of the url row.
+  virtual void OnKeywordSearchTermDeleted(HistoryService* history_service,
+                                          URLID url_id) {}
+
  private:
   DISALLOW_COPY_AND_ASSIGN(HistoryServiceObserver);
 };