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

chrome/browser/printing/print_view_manager_basic.h

 // Copyright 2013 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_PRINTING_PRINT_VIEW_MANAGER_BASIC_H_
 #define CHROME_BROWSER_PRINTING_PRINT_VIEW_MANAGER_BASIC_H_
 
 #include "chrome/browser/printing/print_view_manager_base.h"
 #include "content/public/browser/web_contents_user_data.h"
 
 #if defined(OS_ANDROID)
 #include "base/file_descriptor_posix.h"
 #endif
 
 namespace printing {
 
 // Manages the print commands for a WebContents - basic version.
 class PrintViewManagerBasic
     : public PrintViewManagerBase,
       public content::WebContentsUserData<PrintViewManagerBasic> {
  public:
-  virtual ~PrintViewManagerBasic();
+  ~PrintViewManagerBasic() override;
 
 #if defined(OS_ANDROID)
   // Sets the file descriptor into which the PDF will be written.
   void set_file_descriptor(const base::FileDescriptor& file_descriptor) {
     file_descriptor_ = file_descriptor;
   }
 
   // Gets the file descriptor into which the PDF will be written.
   base::FileDescriptor file_descriptor() const { return file_descriptor_; }
 
   // content::WebContentsObserver implementation.
   // Terminates or cancels the print job if one was pending.
-  virtual void RenderProcessGone(base::TerminationStatus status) override;
+  void RenderProcessGone(base::TerminationStatus status) override;
 
   // content::WebContentsObserver implementation.
-  virtual bool OnMessageReceived(const IPC::Message& message) override;
+  bool OnMessageReceived(const IPC::Message& message) override;
 #endif
 
  private:
   explicit PrintViewManagerBasic(content::WebContents* web_contents);
   friend class content::WebContentsUserData<PrintViewManagerBasic>;
 
 #if defined(OS_ANDROID)
-  virtual void OnPrintingFailed(int cookie) override;
+  void OnPrintingFailed(int cookie) override;
 
   // The file descriptor into which the PDF of the page will be written.
   base::FileDescriptor file_descriptor_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(PrintViewManagerBasic);
 };
 
 }  // namespace printing
 
 #endif  // CHROME_BROWSER_PRINTING_PRINT_VIEW_MANAGER_BASIC_H_