Remove NOTIFICATION_HISTORY_URLS_DELETED

chrome/browser/predictors/resource_prefetch_predictor.h

Index: chrome/browser/predictors/resource_prefetch_predictor.h
diff --git a/chrome/browser/predictors/resource_prefetch_predictor.h b/chrome/browser/predictors/resource_prefetch_predictor.h
index 1225a22bae523045d52f5ee67786cf28eeb1d3ab..523631ff5d67acdfe020d4d8823b93eaeba402aa 100644
--- a/chrome/browser/predictors/resource_prefetch_predictor.h
+++ b/chrome/browser/predictors/resource_prefetch_predictor.h
@@ -23,7 +23,6 @@
 #include "components/history/core/browser/history_types.h"
 #include "components/keyed_service/core/keyed_service.h"
 #include "content/public/browser/notification_observer.h"
-#include "content/public/browser/notification_registrar.h"
 #include "content/public/common/resource_type.h"
 #include "url/gurl.h"
 
@@ -76,7 +75,6 @@ class ResourcePrefetcherManager;
 // with main frame.
 class ResourcePrefetchPredictor
     : public KeyedService,
-      public content::NotificationObserver,
       public history::HistoryServiceObserver,
       public base::SupportsWeakPtr<ResourcePrefetchPredictor> {
  public:
@@ -186,11 +184,6 @@ class ResourcePrefetchPredictor
   // Returns true if the request (should have a response in it) is cacheable.
   static bool IsCacheable(const net::URLRequest* request);
 
-  // content::NotificationObserver methods override.
-  void Observe(int type,
-               const content::NotificationSource& source,
-               const content::NotificationDetails& details) override;
-
   // KeyedService methods override.
   void Shutdown() override;
 
@@ -297,6 +290,9 @@ class ResourcePrefetchPredictor
       size_t max_assumed_prefetched) const;
 
   // history::HistoryServiceObserver:
+  void OnURLsDeleted(
+      HistoryService* history_service,
+      const history::URLsDeletedDetails& deleted_details) override;
   void OnHistoryServiceLoaded(HistoryService* history_service) override;
 
   // Used to connect to HistoryService or register for service loaded
@@ -313,7 +309,6 @@ class ResourcePrefetchPredictor
   InitializationState initialization_state_;
   scoped_refptr<ResourcePrefetchPredictorTables> tables_;
   scoped_refptr<ResourcePrefetcherManager> prefetch_manager_;
-  content::NotificationRegistrar notification_registrar_;
   base::CancelableTaskTracker history_lookup_consumer_;
 
   // Map of all the navigations in flight to their resource requests.