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

chrome/browser/chromeos/app_mode/certificate_manager_dialog.h

Index: chrome/browser/chromeos/app_mode/certificate_manager_dialog.h
diff --git a/chrome/browser/chromeos/app_mode/certificate_manager_dialog.h b/chrome/browser/chromeos/app_mode/certificate_manager_dialog.h
index c0848f951be4c37fc51ea4aaf7f70c13703c94bf..3c4117b32bfa2a86d238e562ba85703f5e147556 100644
--- a/chrome/browser/chromeos/app_mode/certificate_manager_dialog.h
+++ b/chrome/browser/chromeos/app_mode/certificate_manager_dialog.h
@@ -18,7 +18,7 @@ class CertificateManagerDialog : public LoginWebDialog {
   CertificateManagerDialog(Profile* profile,
                            LoginWebDialog::Delegate* delegate,
                            gfx::NativeWindow window);
-  virtual ~CertificateManagerDialog();
+  ~CertificateManagerDialog() override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(CertificateManagerDialog);