Add OVERRIDE to chrome/test/.

chrome/test/ui/npapi_test_helper.h

-// 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.
 
 #ifndef CHROME_TEST_UI_NPAPI_TEST_HELPER_H_
 #define CHROME_TEST_UI_NPAPI_TEST_HELPER_H_
 #pragma once
 
 #include "chrome/test/ui/ui_test.h"
 
 namespace npapi_test {
 extern const char kTestCompleteCookie[];
 extern const char kTestCompleteSuccess[];
 }  // namespace npapi_test.
 
 // Base class for NPAPI tests. It provides common functionality between
 // regular NPAPI plugins and pepper NPAPI plugins.
 class NPAPITesterBase : public UITest {
  protected:
   explicit NPAPITesterBase();
-  virtual void SetUp();
+  virtual void SetUp() OVERRIDE;
 
   FilePath GetPluginsDirectory();
 };
 
 // Helper class for NPAPI plugin UI tests, which need the browser window
 // to be visible.
 class NPAPIVisiblePluginTester : public NPAPITesterBase {
  protected:
-  virtual void SetUp();
+  virtual void SetUp() OVERRIDE;
 };
 
 // Helper class for NPAPI plugin UI tests which use incognito mode.
 class NPAPIIncognitoTester : public NPAPITesterBase {
  protected:
-  virtual void SetUp();
+  virtual void SetUp() OVERRIDE;
 };
 
 #endif  // CHROME_TEST_UI_NPAPI_TEST_HELPER_H_