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

chrome/browser/supervised_user/supervised_user_navigation_observer.cc

 // 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.
 
 #include "chrome/browser/supervised_user/supervised_user_navigation_observer.h"
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/metrics/histogram.h"
 #include "base/strings/string_util.h"
@@ skipping 67 matching lines @@
 // SupervisedUserWarningInfoBarDelegate ---------------------------------------
 
 class SupervisedUserWarningInfoBarDelegate : public ConfirmInfoBarDelegate {
  public:
   // Creates a supervised user warning infobar and delegate and adds the infobar
   // to |infobar_service|.  Returns the infobar if it was successfully added.
   static infobars::InfoBar* Create(InfoBarService* infobar_service);
 
  private:
   SupervisedUserWarningInfoBarDelegate();
-  virtual ~SupervisedUserWarningInfoBarDelegate();
+  ~SupervisedUserWarningInfoBarDelegate() override;
 
   // ConfirmInfoBarDelegate:
-  virtual bool ShouldExpire(const NavigationDetails& details) const override;
-  virtual void InfoBarDismissed() override;
-  virtual base::string16 GetMessageText() const override;
-  virtual int GetButtons() const override;
-  virtual base::string16 GetButtonLabel(InfoBarButton button) const override;
-  virtual bool Accept() override;
+  bool ShouldExpire(const NavigationDetails& details) const override;
+  void InfoBarDismissed() override;
+  base::string16 GetMessageText() const override;
+  int GetButtons() const override;
+  base::string16 GetButtonLabel(InfoBarButton button) const override;
+  bool Accept() override;
 
   DISALLOW_COPY_AND_ASSIGN(SupervisedUserWarningInfoBarDelegate);
 };
 
 // static
 infobars::InfoBar* SupervisedUserWarningInfoBarDelegate::Create(
     InfoBarService* infobar_service) {
   return infobar_service->AddInfoBar(ConfirmInfoBarDelegate::CreateInfoBar(
       scoped_ptr<ConfirmInfoBarDelegate>(
           new SupervisedUserWarningInfoBarDelegate())));
@@ skipping 136 matching lines @@
     history_service->AddPage(add_page_args);
 
   scoped_ptr<NavigationEntry> entry(NavigationEntry::Create());
   entry->SetVirtualURL(url);
   entry->SetTimestamp(timestamp);
   blocked_navigations_.push_back(entry.release());
   SupervisedUserService* supervised_user_service =
       SupervisedUserServiceFactory::GetForProfile(profile);
   supervised_user_service->DidBlockNavigation(web_contents());
 }