Eliminate NOTIFICATION_HISTORY_LOADED notification

chrome/browser/history/in_memory_url_index.h

Index: chrome/browser/history/in_memory_url_index.h
diff --git a/chrome/browser/history/in_memory_url_index.h b/chrome/browser/history/in_memory_url_index.h
index 43b15957a0671984190a1ac6d40e1c4b775c933a..1e698d841419d389541431bd61c7501c417f65ec 100644
--- a/chrome/browser/history/in_memory_url_index.h
+++ b/chrome/browser/history/in_memory_url_index.h
@@ -22,11 +22,13 @@
 #include "chrome/browser/history/history_types.h"
 #include "chrome/browser/history/in_memory_url_index_types.h"
 #include "chrome/browser/history/scored_history_match.h"
+#include "components/history/core/browser/history_service_observer.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "sql/connection.h"
 
 class HistoryQuickProviderTest;
+class HistoryService;
 class Profile;
 
 namespace base {
@@ -68,7 +70,8 @@ struct URLVisitedDetails;
 // is being searched on and which character occurs as the second char16 of a
 // multi-char16 instance.
 class InMemoryURLIndex : public content::NotificationObserver,
-                         public base::SupportsWeakPtr<InMemoryURLIndex> {
+                         public base::SupportsWeakPtr<InMemoryURLIndex>,
+                         public history::HistoryServiceObserver {
  public:
   // Defines an abstract class which is notified upon completion of restoring
   // the index's private data either by reading from the cache file or by
@@ -143,6 +146,9 @@ class InMemoryURLIndex : public content::NotificationObserver,
     return restored_;
   }
 
+  // Is called when |service| is loaded.

[sdefresne, 2014/09/23 08:45:09]

When overriding methods from an interface, you don't copy descriptions for the
methods, but just put the name of the interface providing those methods (same
for the other places).

// history::HistoryServiceObserver:
virtual void HistoryServiceLoaded(HistoryService* service) OVERRIDE;

[nshaik, 2014/10/29 08:43:39]

Done.

+  virtual void HistoryServiceLoaded(HistoryService* service) OVERRIDE;

[sdefresne, 2014/10/20 13:15:42]

OVERRIDE -> override

+
  private:
   friend class ::HistoryQuickProviderTest;
   friend class InMemoryURLIndexTest;