Add OVERRIDE to chrome/browser/.

chrome/browser/history/history_database.h

 // Copyright (c) 2011 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_HISTORY_DATABASE_H_
 #define CHROME_BROWSER_HISTORY_HISTORY_DATABASE_H_
 #pragma once
 
 #include "base/gtest_prod_util.h"
 #include "build/build_config.h"
@@ skipping 128 matching lines @@
   // Retrieves/Updates early expiration threshold, which specifies the earliest
   // known point in history that may possibly to contain visits suitable for
   // early expiration (AUTO_SUBFRAMES).
   virtual base::Time GetEarlyExpirationThreshold();
   virtual void UpdateEarlyExpirationThreshold(base::Time threshold);
 
  private:
   FRIEND_TEST_ALL_PREFIXES(IconMappingMigrationTest, TestIconMappingMigration);
 
   // Implemented for URLDatabase.
-  virtual sql::Connection& GetDB();
+  virtual sql::Connection& GetDB() OVERRIDE;
 
   // Migration -----------------------------------------------------------------
 
   // Makes sure the version is up-to-date, updating if necessary. If the
   // database is too old to migrate, the user will be notified. In this case, or
   // for other errors, false will be returned. True means it is up-to-date and
   // ready for use.
   //
   // This assumes it is called from the init function inside a transaction. It
   // may commit the transaction and start a new one if migration requires it.
@@ skipping 14 matching lines @@
 
   // See the getters above.
   bool needs_version_17_migration_;
 
   DISALLOW_COPY_AND_ASSIGN(HistoryDatabase);
 };
 
 }  // namespace history
 
 #endif  // CHROME_BROWSER_HISTORY_HISTORY_DATABASE_H_