Add OVERRIDE to chrome/browser/extensions/.

chrome/browser/extensions/extension_i18n_api.h

Index: chrome/browser/extensions/extension_i18n_api.h
diff --git a/chrome/browser/extensions/extension_i18n_api.h b/chrome/browser/extensions/extension_i18n_api.h
index 31df7151d3ade24d633fc030e6db1528277c7b38..34be76c5ae3a43b54dfc41171458d423acedf06c 100644
--- a/chrome/browser/extensions/extension_i18n_api.h
+++ b/chrome/browser/extensions/extension_i18n_api.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// 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.
 
@@ -10,7 +10,7 @@
 
 class GetAcceptLanguagesFunction : public SyncExtensionFunction {
   virtual ~GetAcceptLanguagesFunction() {}
-  virtual bool RunImpl();
+  virtual bool RunImpl() OVERRIDE;
   DECLARE_EXTENSION_FUNCTION_NAME("i18n.getAcceptLanguages")
 };