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..1d4dd19d44cd5e32bc5de914046e3c85701ca972 100644
--- a/components/history/core/browser/history_service_observer.h
+++ b/components/history/core/browser/history_service_observer.h
@@ -58,6 +58,12 @@ class HistoryServiceObserver {
                                           KeywordID keyword_id,
                                           const base::string16& term) {}
 
+  // Sent when a keyword search term is deleted.
+  //
+  // |url_id| id of the url row.

[sdefresne, 2015/01/16 06:56:00]

Style: comment must be correct english sentences

// Sent when a keyword search term is deleted.
// |url_id| is the id of the URL row.

[Abhishek, 2015/01/16 07:43:48]

Done.

+  virtual void OnKeywordSearchTermDeleted(HistoryService* history_service,
+                                          URLID url_id) {}
+
  private:
   DISALLOW_COPY_AND_ASSIGN(HistoryServiceObserver);
 };