replace OVERRIDE and FINAL with override and final in extensions/

extensions/common/manifest_handlers/background_info.h

 // Copyright 2013 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 EXTENSIONS_COMMON_MANIFEST_HANDLERS_BACKGROUND_INFO_H_
 #define EXTENSIONS_COMMON_MANIFEST_HANDLERS_BACKGROUND_INFO_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 65 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(BackgroundInfo);
 };
 
 // Parses all background/event page-related keys in the manifest.
 class BackgroundManifestHandler : public ManifestHandler {
  public:
   BackgroundManifestHandler();
   virtual ~BackgroundManifestHandler();
 
-  virtual bool Parse(Extension* extension, base::string16* error) OVERRIDE;
+  virtual bool Parse(Extension* extension, base::string16* error) override;
   virtual bool Validate(const Extension* extension,
                         std::string* error,
-                        std::vector<InstallWarning>* warnings) const OVERRIDE;
-  virtual bool AlwaysParseForType(Manifest::Type type) const OVERRIDE;
+                        std::vector<InstallWarning>* warnings) const override;
+  virtual bool AlwaysParseForType(Manifest::Type type) const override;
 
  private:
-  virtual const std::vector<std::string> Keys() const OVERRIDE;
+  virtual const std::vector<std::string> Keys() const override;
 
   DISALLOW_COPY_AND_ASSIGN(BackgroundManifestHandler);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_COMMON_MANIFEST_HANDLERS_BACKGROUND_INFO_H_