replace OVERRIDE and FINAL with override and final in chrome/browser/[a-i]*

chrome/browser/history/in_memory_history_backend.h

 // 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 InMemoryHistoryBackend is a wrapper around the in-memory URL database.
 // It maintains an in-memory cache of a subset of history that is required for
 // low-latency operations, such as in-line autocomplete.
 //
 // The in-memory cache provides the following guarantees:
 //  (1.) It will always contain URLRows that either have a |typed_count| > 0; or
@@ skipping 54 matching lines @@
   // Returns the underlying database associated with this backend. The current
   // autocomplete code was written fro this, but it should probably be removed
   // so that it can deal directly with this object, rather than the DB.
   InMemoryDatabase* db() const {
     return db_.get();
   }
 
   // Notification callback.
   virtual void Observe(int type,
                        const content::NotificationSource& source,
-                       const content::NotificationDetails& details) OVERRIDE;
+                       const content::NotificationDetails& details) override;
 
  private:
   FRIEND_TEST_ALL_PREFIXES(HistoryBackendTest, DeleteAll);
 
   // Handler for HISTORY_URL_VISITED and HISTORY_URLS_MODIFIED.
   void OnURLVisitedOrModified(const URLRow& url_row);
 
   // Handler for HISTORY_URLS_DELETED.
   void OnURLsDeleted(const URLsDeletedDetails& details);
 
@@ skipping 10 matching lines @@
   // The profile that this object is attached. May be NULL before
   // initialization.
   Profile* profile_;
 
   DISALLOW_COPY_AND_ASSIGN(InMemoryHistoryBackend);
 };
 
 }  // namespace history
 
 #endif  // CHROME_BROWSER_HISTORY_IN_MEMORY_HISTORY_BACKEND_H_