Replacing the OVERRIDE with override in chrome/common

chrome/common/extensions/manifest_handlers/extension_action_handler.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_COMMON_EXTENSIONS_MANIFEST_HANDLERS_EXTENSION_ACTION_HANDLER_H_
 #define CHROME_COMMON_EXTENSIONS_MANIFEST_HANDLERS_EXTENSION_ACTION_HANDLER_H_
 
 #include <string>
 
 #include "extensions/common/manifest_handler.h"
 
 namespace extensions {
 
 // Parses the "page_action" and "browser_action" manifest keys.
 class ExtensionActionHandler : public ManifestHandler {
  public:
   ExtensionActionHandler();
   virtual ~ExtensionActionHandler();
 
-  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;
+                        std::vector<InstallWarning>* warnings) const override;
 
  private:
-  virtual bool AlwaysParseForType(Manifest::Type type) const OVERRIDE;
-  virtual const std::vector<std::string> Keys() const OVERRIDE;
+  virtual bool AlwaysParseForType(Manifest::Type type) const override;
+  virtual const std::vector<std::string> Keys() const override;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionActionHandler);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_COMMON_EXTENSIONS_MANIFEST_HANDLERS_EXTENSION_ACTION_HANDLER_H_