Update {virtual,override,final} to follow C++11 style in chrome/browser/chromeos/drive.

chrome/browser/chromeos/drive/download_handler.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_CHROMEOS_DRIVE_DOWNLOAD_HANDLER_H_
 #define CHROME_BROWSER_CHROMEOS_DRIVE_DOWNLOAD_HANDLER_H_
 
 #include "base/callback_forward.h"
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/chromeos/drive/file_errors.h"
@@ skipping 10 matching lines @@
 namespace drive {
 
 class FileSystemInterface;
 class ResourceEntry;
 
 // Observes downloads to temporary local drive folder. Schedules these
 // downloads for upload to drive service.
 class DownloadHandler : public AllDownloadItemNotifier::Observer {
  public:
   explicit DownloadHandler(FileSystemInterface* file_system);
-  virtual ~DownloadHandler();
+  ~DownloadHandler() override;
 
   // Utility method to get DownloadHandler with profile.
   static DownloadHandler* GetForProfile(Profile* profile);
 
   // Become an observer of DownloadManager.
   void Initialize(content::DownloadManager* download_manager,
                   const base::FilePath& drive_tmp_download_path);
 
   // In addition to the DownloadManager passed to Initialize(), observe another
   // download manager. This should be called only for the DownloadManager of the
@@ skipping 26 matching lines @@
   // Checks if there is a Drive upload associated with |download|
   bool IsDriveDownload(const content::DownloadItem* download);
 
   // Checks a file corresponding to the download item exists in Drive.
   void CheckForFileExistence(
       const content::DownloadItem* download,
       const content::CheckForFileExistenceCallback& callback);
 
  private:
   // AllDownloadItemNotifier::Observer overrides:
-  virtual void OnDownloadCreated(content::DownloadManager* manager,
-                                 content::DownloadItem* download) override;
-  virtual void OnDownloadUpdated(content::DownloadManager* manager,
-                                 content::DownloadItem* download) override;
+  void OnDownloadCreated(content::DownloadManager* manager,
+                         content::DownloadItem* download) override;
+  void OnDownloadUpdated(content::DownloadManager* manager,
+                         content::DownloadItem* download) override;
 
   // Removes the download.
   void RemoveDownload(void* manager_id, int id);
 
   // Callback for FileSystem::CreateDirectory().
   // Used to implement SubstituteDriveDownloadPath().
   void OnCreateDirectory(const SubstituteDriveDownloadPathCallback& callback,
                          FileError error);
 
   // Starts the upload of a downloaded/downloading file.
@@ skipping 22 matching lines @@
   // Note: This should remain the last member so it'll be destroyed and
   // invalidate its weak pointers before any other members are destroyed.
   base::WeakPtrFactory<DownloadHandler> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(DownloadHandler);
 };
 
 }  // namespace drive
 
 #endif  // CHROME_BROWSER_CHROMEOS_DRIVE_DOWNLOAD_HANDLER_H_