Update {virtual,override,final} to follow C++11 style.

chrome/browser/sessions/in_memory_tab_restore_service.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_BROWSER_SESSIONS_IN_MEMORY_TAB_RESTORE_SERVICE_H_
 #define CHROME_BROWSER_SESSIONS_IN_MEMORY_TAB_RESTORE_SERVICE_H_
 
 #include <vector>
 
 #include "chrome/browser/sessions/tab_restore_service.h"
 #include "chrome/browser/sessions/tab_restore_service_helper.h"
 
 // Tab restore service that doesn't persist tabs on disk. This is used on
 // Android where tabs persistence is implemented on the application side in
 // Java. Other platforms should use PersistentTabRestoreService which can be
 // instantiated through the TabRestoreServiceFactory.
 class InMemoryTabRestoreService : public TabRestoreService {
  public:
   // Creates a new TabRestoreService and provides an object that provides the
   // current time. The TabRestoreService does not take ownership of
   // |time_factory|.
   InMemoryTabRestoreService(Profile* profile,
                             TimeFactory* time_factory);
 
-  virtual ~InMemoryTabRestoreService();
+  ~InMemoryTabRestoreService() override;
 
   // TabRestoreService:
-  virtual void AddObserver(TabRestoreServiceObserver* observer) override;
-  virtual void RemoveObserver(TabRestoreServiceObserver* observer) override;
-  virtual void CreateHistoricalTab(content::WebContents* contents,
-                                   int index) override;
-  virtual void BrowserClosing(TabRestoreServiceDelegate* delegate) override;
-  virtual void BrowserClosed(TabRestoreServiceDelegate* delegate) override;
-  virtual void ClearEntries() override;
-  virtual const Entries& entries() const override;
-  virtual std::vector<content::WebContents*> RestoreMostRecentEntry(
+  void AddObserver(TabRestoreServiceObserver* observer) override;
+  void RemoveObserver(TabRestoreServiceObserver* observer) override;
+  void CreateHistoricalTab(content::WebContents* contents, int index) override;
+  void BrowserClosing(TabRestoreServiceDelegate* delegate) override;
+  void BrowserClosed(TabRestoreServiceDelegate* delegate) override;
+  void ClearEntries() override;
+  const Entries& entries() const override;
+  std::vector<content::WebContents*> RestoreMostRecentEntry(
       TabRestoreServiceDelegate* delegate,
       chrome::HostDesktopType host_desktop_type) override;
-  virtual Tab* RemoveTabEntryById(SessionID::id_type id) override;
-  virtual std::vector<content::WebContents*>
-    RestoreEntryById(TabRestoreServiceDelegate* delegate,
-                     SessionID::id_type id,
-                     chrome::HostDesktopType host_desktop_type,
-                     WindowOpenDisposition disposition) override;
-  virtual void LoadTabsFromLastSession() override;
-  virtual bool IsLoaded() const override;
-  virtual void DeleteLastSession() override;
-  virtual void Shutdown() override;
+  Tab* RemoveTabEntryById(SessionID::id_type id) override;
+  std::vector<content::WebContents*> RestoreEntryById(
+      TabRestoreServiceDelegate* delegate,
+      SessionID::id_type id,
+      chrome::HostDesktopType host_desktop_type,
+      WindowOpenDisposition disposition) override;
+  void LoadTabsFromLastSession() override;
+  bool IsLoaded() const override;
+  void DeleteLastSession() override;
+  void Shutdown() override;
 
  private:
   TabRestoreServiceHelper helper_;
 
   DISALLOW_COPY_AND_ASSIGN(InMemoryTabRestoreService);
 };
 
 #endif  // CHROME_BROWSER_SESSIONS_IN_MEMORY_TAB_RESTORE_SERVICE_H_