Add OVERRIDE to chrome/browser/extensions/.

chrome/browser/extensions/sandboxed_extension_unpacker.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_EXTENSIONS_SANDBOXED_EXTENSION_UNPACKER_H_
 #define CHROME_BROWSER_EXTENSIONS_SANDBOXED_EXTENSION_UNPACKER_H_
 #pragma once
 
 #include <string>
 
@@ skipping 176 matching lines @@
   // put here because we cannot run windows crypto code in the sandbox. But we
   // could still have this method statically on ExtensionUnpacker so that code
   // just for unpacking is there and code just for sandboxing of unpacking is
   // here.
   bool ValidateSignature();
 
   // Starts the utility process that unpacks our extension.
   void StartProcessOnIOThread(const FilePath& temp_crx_path);
 
   // UtilityProcessHost::Client
-  virtual bool OnMessageReceived(const IPC::Message& message);
-  virtual void OnProcessCrashed(int exit_code);
+  virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
+  virtual void OnProcessCrashed(int exit_code) OVERRIDE;
 
   // IPC message handlers.
   void OnUnpackExtensionSucceeded(const base::DictionaryValue& manifest);
   void OnUnpackExtensionFailed(const std::string& error_message);
 
   void ReportFailure(FailureReason reason, const std::string& message);
   void ReportSuccess(const base::DictionaryValue& original_manifest);
 
   // Overwrites original manifest with safe result from utility process.
   // Returns NULL on error. Caller owns the returned object.
@@ skipping 37 matching lines @@
 
   // Location to use for the unpacked extension.
   Extension::Location location_;
 
   // Creation flags to use for the extension.  These flags will be used
   // when calling Extenion::Create() by the crx installer.
   int creation_flags_;
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_SANDBOXED_EXTENSION_UNPACKER_H_