Eliminate sending NOTIFICATION_HISTORY_KEYWORD_SEARCH_TERM_UPDATED

chrome/browser/history/history_service.cc

 // 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.
 
 // The history system runs on a background thread so that potentially slow
 // database operations don't delay the browser. This backend processing is
 // represented by HistoryBackend. The HistoryService's job is to dispatch to
 // that thread.
 //
 // Main thread                       History thread
@@ skipping 171 matching lines @@
   }
 
   void NotifyURLsModified(const history::URLRows& changed_urls) override {
     service_task_runner_->PostTask(
         FROM_HERE,
         base::Bind(&HistoryService::NotifyURLsModified,
                    history_service_,
                    changed_urls));
   }
 
+  void NotifyKeywordSearchTermUpdated(const history::URLRow& row,
+                                      KeywordID keyword_id,
+                                      const base::string16& term) override {
+    service_task_runner_->PostTask(
+        FROM_HERE, base::Bind(&HistoryService::NotifyKeywordSearchTermUpdated,
+                              history_service_, row, keyword_id, term));
+  }
+
   void BroadcastNotifications(
       int type,
       scoped_ptr<history::HistoryDetails> details) override {
     // Send the notification on the history thread.
     if (content::NotificationService::current()) {
       content::Details<history::HistoryDetails> det(details.get());
       content::NotificationService::current()->Notify(
           type, content::Source<Profile>(profile_), det);
     }
     // Send the notification to the history service on the main thread.
@@ skipping 1071 matching lines @@
   FOR_EACH_OBSERVER(history::HistoryServiceObserver, observers_,
                     OnHistoryServiceLoaded(this));
 }
 
 void HistoryService::NotifyHistoryServiceBeingDeleted() {
   DCHECK(thread_checker_.CalledOnValidThread());
   FOR_EACH_OBSERVER(history::HistoryServiceObserver, observers_,
                     HistoryServiceBeingDeleted(this));
 }
 
+void HistoryService::NotifyKeywordSearchTermUpdated(
+    const history::URLRow& row,
+    history::KeywordID keyword_id,
+    const base::string16& term) {
+  DCHECK(thread_checker_.CalledOnValidThread());
+  FOR_EACH_OBSERVER(history::HistoryServiceObserver, observers_,
+                    OnKeywordSearchTermUpdated(this, row, keyword_id, term));
+}
+
 scoped_ptr<base::CallbackList<void(const std::set<GURL>&)>::Subscription>
 HistoryService::AddFaviconChangedCallback(
     const HistoryService::OnFaviconChangedCallback& callback) {
   DCHECK(thread_checker_.CalledOnValidThread());
   return favicon_changed_callback_list_.Add(callback);
 }
 
 void HistoryService::NotifyFaviconChanged(
     const std::set<GURL>& changed_favicons) {
   DCHECK(thread_checker_.CalledOnValidThread());
   favicon_changed_callback_list_.Notify(changed_favicons);
 }