Standardize usage of virtual/override/final in chrome/browser/ui/

chrome/browser/ui/webui/about_ui.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_UI_WEBUI_ABOUT_UI_H_
 #define CHROME_BROWSER_UI_WEBUI_ABOUT_UI_H_
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "content/public/browser/url_data_source.h"
 #include "content/public/browser/web_ui_controller.h"
 
 class Profile;
 
 // We expose this class because the OOBE flow may need to explicitly add the
 // chrome://terms source outside of the normal flow.
 class AboutUIHTMLSource : public content::URLDataSource {
  public:
   // Construct a data source for the specified |source_name|.
   AboutUIHTMLSource(const std::string& source_name, Profile* profile);
 
   // content::URLDataSource implementation.
-  virtual std::string GetSource() const override;
-  virtual void StartDataRequest(
+  std::string GetSource() const override;
+  void StartDataRequest(
       const std::string& path,
       int render_process_id,
       int render_frame_id,
       const content::URLDataSource::GotDataCallback& callback) override;
-  virtual std::string GetMimeType(const std::string& path) const override;
-  virtual bool ShouldAddContentSecurityPolicy() const override;
-  virtual bool ShouldDenyXFrameOptions() const override;
+  std::string GetMimeType(const std::string& path) const override;
+  bool ShouldAddContentSecurityPolicy() const override;
+  bool ShouldDenyXFrameOptions() const override;
 
   // Send the response data.
   void FinishDataRequest(
       const std::string& html,
       const content::URLDataSource::GotDataCallback& callback);
 
   Profile* profile() { return profile_; }
 
  private:
-  virtual ~AboutUIHTMLSource();
+  ~AboutUIHTMLSource() override;
 
   std::string source_name_;
   Profile* profile_;
 
   DISALLOW_COPY_AND_ASSIGN(AboutUIHTMLSource);
 };
 
 class AboutUI : public content::WebUIController {
  public:
   explicit AboutUI(content::WebUI* web_ui, const std::string& host);
-  virtual ~AboutUI() {}
+  ~AboutUI() override {}
 
  private:
   DISALLOW_COPY_AND_ASSIGN(AboutUI);
 };
 
 namespace about_ui {
 
 // Helper functions
 void AppendHeader(std::string* output, int refresh,
                   const std::string& unescaped_title);
 void AppendBody(std::string *output);
 void AppendFooter(std::string *output);
 
 }  // namespace about_ui
 
 #endif  // CHROME_BROWSER_UI_WEBUI_ABOUT_UI_H_