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

chrome/browser/task_manager/tab_contents_information.cc

 // Copyright 2014 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.
 
 #include "chrome/browser/task_manager/tab_contents_information.h"
 
 #include "base/callback.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/devtools/devtools_window.h"
@@ skipping 35 matching lines @@
   return prerender_manager &&
          prerender_manager->IsWebContentsPrerendering(web_contents, NULL);
 }
 
 }  // namespace
 
 // Tracks a single tab contents, prerendered page, or Instant page.
 class TabContentsResource : public RendererResource {
  public:
   explicit TabContentsResource(content::WebContents* web_contents);
-  virtual ~TabContentsResource();
+  ~TabContentsResource() override;
 
   // Resource methods:
-  virtual Type GetType() const override;
-  virtual base::string16 GetTitle() const override;
-  virtual gfx::ImageSkia GetIcon() const override;
-  virtual content::WebContents* GetWebContents() const override;
+  Type GetType() const override;
+  base::string16 GetTitle() const override;
+  gfx::ImageSkia GetIcon() const override;
+  content::WebContents* GetWebContents() const override;
 
  private:
   // Returns true if contains content rendered by an extension.
   bool HostsExtension() const;
 
   static gfx::ImageSkia* prerender_icon_;
   content::WebContents* web_contents_;
   Profile* profile_;
 
   DISALLOW_COPY_AND_ASSIGN(TabContentsResource);
@@ skipping 95 matching lines @@
     }
   }
 }
 
 scoped_ptr<RendererResource> TabContentsInformation::MakeResource(
     content::WebContents* web_contents) {
   return scoped_ptr<RendererResource>(new TabContentsResource(web_contents));
 }
 
 }  // namespace task_manager