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

chrome/browser/task_manager/web_contents_information.h

 // 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.
 
 #ifndef CHROME_BROWSER_TASK_MANAGER_WEB_CONTENTS_INFORMATION_H_
 #define CHROME_BROWSER_TASK_MANAGER_WEB_CONTENTS_INFORMATION_H_
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 43 matching lines @@
 };
 
 // Implements the observer methods (StartObservingCreation() /
 // StopObservingCreation()) of WebContentsInformation using
 // NOTIFICATION_WEB_CONTENTS_CONNECTED.
 class NotificationObservingWebContentsInformation
     : public WebContentsInformation,
       public content::NotificationObserver {
  public:
   NotificationObservingWebContentsInformation();
-  virtual ~NotificationObservingWebContentsInformation();
+  ~NotificationObservingWebContentsInformation() override;
 
   // WebContentsInformation partial implementation.
-  virtual void StartObservingCreation(const NewWebContentsCallback& callback)
-      override;
-  virtual void StopObservingCreation() override;
+  void StartObservingCreation(const NewWebContentsCallback& callback) override;
+  void StopObservingCreation() override;
 
   // content::NotificationObserver implementation.
-  virtual void Observe(int type,
-                       const content::NotificationSource& source,
-                       const content::NotificationDetails& details) override;
+  void Observe(int type,
+               const content::NotificationSource& source,
+               const content::NotificationDetails& details) override;
 
  private:
   content::NotificationRegistrar registrar_;
   NewWebContentsCallback observer_callback_;
   DISALLOW_COPY_AND_ASSIGN(NotificationObservingWebContentsInformation);
 };
 
 }  // namespace task_manager
 
 #endif  // CHROME_BROWSER_TASK_MANAGER_WEB_CONTENTS_INFORMATION_H_