Eliminate NOTIFICATION_HISTORY_LOADED notification

chrome/browser/history/history_service.cc

Index: chrome/browser/history/history_service.cc
diff --git a/chrome/browser/history/history_service.cc b/chrome/browser/history/history_service.cc
index 45e62ca6ca399d3d84ecde9062ff2d32b7a29236..61fb6b132639c801ccd186176a1b9b73e03294c8 100644
--- a/chrome/browser/history/history_service.cc
+++ b/chrome/browser/history/history_service.cc
@@ -881,6 +881,8 @@ void HistoryService::Cleanup() {
     return;
   }
 
+  NotifyHistoryServiceBeingDeleted();
+
   weak_ptr_factory_.InvalidateWeakPtrs();
 
   // Unload the backend.
@@ -1227,10 +1229,7 @@ void HistoryService::BroadcastNotificationsHelper(
 void HistoryService::OnDBLoaded() {
   DCHECK(thread_checker_.CalledOnValidThread());
   backend_loaded_ = true;
-  content::NotificationService::current()->Notify(
-      chrome::NOTIFICATION_HISTORY_LOADED,
-      content::Source<Profile>(profile_),
-      content::Details<HistoryService>(this));
+  NotifyHistoryServiceLoaded();
 }
 
 bool HistoryService::GetRowForURL(const GURL& url, history::URLRow* url_row) {
@@ -1267,3 +1266,15 @@ void HistoryService::NotifyFaviconChanged(
   DCHECK(thread_checker_.CalledOnValidThread());
   favicon_changed_callback_list_.Notify(changed_favicons);
 }
+
+void HistoryService::NotifyHistoryServiceLoaded() {
+  DCHECK(thread_checker_.CalledOnValidThread());
+  FOR_EACH_OBSERVER(history::HistoryServiceObserver, observers_,
+                    OnHistoryServiceLoaded(this));
+}
+
+void HistoryService::NotifyHistoryServiceBeingDeleted() {
+  DCHECK(thread_checker_.CalledOnValidThread());
+  FOR_EACH_OBSERVER(history::HistoryServiceObserver, observers_,
+                    HistoryServiceBeingDeleted(this));
+}