Standardize usage of virtual/override/final specifiers.

chrome/test/data/webui/chrome_send_browsertest.h

 // Copyright (c) 2012 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_DATA_WEBUI_CHROME_SEND_BROWSERTEST_H_
 #define CHROME_TEST_DATA_WEBUI_CHROME_SEND_BROWSERTEST_H_
 
 #include "chrome/test/base/web_ui_browser_test.h"
 #include "content/public/browser/web_ui_message_handler.h"
 #include "testing/gmock/include/gmock/gmock.h"
@@ skipping 26 matching lines @@
   virtual content::WebUIMessageHandler* GetMockMessageHandler() override;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeSendWebUITest);
 };
 
 // Test fixture for verifying chrome.send messages are passed through. This
 // class DOES expect to receive the "checkSend" message.
 class ChromeSendPassthroughWebUITest : public ChromeSendWebUITest {
  public:
   ChromeSendPassthroughWebUITest();
-  virtual ~ChromeSendPassthroughWebUITest();
+  ~ChromeSendPassthroughWebUITest() override;
 
  private:
   void SetUpOnMainThread() override;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeSendPassthroughWebUITest);
 };
 
 #endif  // CHROME_TEST_DATA_WEBUI_CHROME_SEND_BROWSERTEST_H_