Standardize usage of virtual/override/final specifiers.

chrome/browser/media/webrtc_browsertest_base.h

 // Copyright 2013 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_MEDIA_WEBRTC_BROWSERTEST_BASE_H_
 #define CHROME_BROWSER_MEDIA_WEBRTC_BROWSERTEST_BASE_H_
 
 #include <string>
 
 #include "chrome/test/base/in_process_browser_test.h"
@@ skipping 19 matching lines @@
   static const char kAudioVideoCallConstraints360p[];
   static const char kAudioVideoCallConstraintsVGA[];
   static const char kAudioVideoCallConstraints720p[];
   static const char kAudioVideoCallConstraints1080p[];
 
   static const char kFailedWithPermissionDeniedError[];
   static const char kFailedWithPermissionDismissedError[];
 
  protected:
   WebRtcTestBase();
-  virtual ~WebRtcTestBase();
+  ~WebRtcTestBase() override;
 
   // These all require that the loaded page fulfills the public interface in
   // chrome/test/data/webrtc/message_handling.js.
   void GetUserMediaAndAccept(content::WebContents* tab_contents) const;
   void GetUserMediaWithSpecificConstraintsAndAccept(
       content::WebContents* tab_contents,
       const std::string& constraints) const;
   void GetUserMediaAndDeny(content::WebContents* tab_contents);
   void GetUserMediaWithSpecificConstraintsAndDeny(
       content::WebContents* tab_contents,
@@ skipping 79 matching lines @@
   infobars::InfoBar* GetUserMediaAndWaitForInfoBar(
       content::WebContents* tab_contents,
       const std::string& constraints) const;
 
   bool detect_errors_in_javascript_;
 
   DISALLOW_COPY_AND_ASSIGN(WebRtcTestBase);
 };
 
 #endif  // CHROME_BROWSER_MEDIA_WEBRTC_BROWSERTEST_BASE_H_