replace newly added OVERRIDEs with override in chrome/browser/history/

chrome/browser/history/chrome_history_client.h

 // Copyright 2014 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.
 
 #ifndef CHROME_BROWSER_HISTORY_CHROME_HISTORY_CLIENT_H_
 #define CHROME_BROWSER_HISTORY_CHROME_HISTORY_CLIENT_H_
 
 #include "base/macros.h"
 #include "components/history/core/browser/history_client.h"
 #include "components/history/core/browser/history_service_observer.h"
@@ skipping 32 matching lines @@
   virtual bool ShouldReportDatabaseError() override;
 
   // KeyedService:
   virtual void Shutdown() override;
 
   // HistoryServiceObserver:
   virtual void OnURLVisited(HistoryService* history_service,
                             ui::PageTransition transition,
                             const history::URLRow& row,
                             const history::RedirectList& redirects,
-                            base::Time visit_time) OVERRIDE;
+                            base::Time visit_time) override;
 
   // TopSitesObserver:
   virtual void TopSitesLoaded(history::TopSites* top_sites) override;
   virtual void TopSitesChanged(history::TopSites* top_sites) override;
 
  private:
   // The BookmarkModel, this should outlive ChromeHistoryClient.
   BookmarkModel* bookmark_model_;
   Profile* profile_;
   HistoryService* history_service_;
   // The TopSites object is owned by the Profile (see
   // chrome/browser/profiles/profile_impl.h)
   // and lazily constructed by the  getter.
   // ChromeHistoryClient is a KeyedService linked to the Profile lifetime by the
   // ChromeHistoryClientFactory (which is a BrowserContextKeyedServiceFactory).
   // Before the Profile is destroyed, all the KeyedService Shutdown methods are
   // called, and the Profile is fully constructed before any of the KeyedService
   // can  be constructed. The TopSites does not use the HistoryService nor the
   // HistoryClient during construction (it uses it later, but supports getting
   // an NULL  pointer).
   history::TopSites* top_sites_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeHistoryClient);
 };
 
 #endif  // CHROME_BROWSER_HISTORY_CHROME_HISTORY_CLIENT_H_