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

chrome/browser/ui/startup/startup_browser_creator_impl.cc

 // 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.
 
 #include "chrome/browser/ui/startup/startup_browser_creator_impl.h"
 
 #include <algorithm>
 #include <vector>
 
 #include "apps/app_restore_service.h"
@@ skipping 228 matching lines @@
       CoreAppLauncherHandler::RecordAppLaunchType(
           extension_misc::APP_LAUNCH_AUTOLAUNCH,
           extension->GetType());
     }
   }
 }
 
 class WebContentsCloseObserver : public content::NotificationObserver {
  public:
   WebContentsCloseObserver() : contents_(NULL) {}
-  virtual ~WebContentsCloseObserver() {}
+  ~WebContentsCloseObserver() override {}
 
   void SetContents(content::WebContents* contents) {
     DCHECK(!contents_);
     contents_ = contents;
 
     registrar_.Add(this,
                    content::NOTIFICATION_WEB_CONTENTS_DESTROYED,
                    content::Source<content::WebContents>(contents_));
   }
 
   content::WebContents* contents() { return contents_; }
 
  private:
   // content::NotificationObserver overrides:
-  virtual void Observe(int type,
-                       const content::NotificationSource& source,
-                       const content::NotificationDetails& details) override {
+  void Observe(int type,
+               const content::NotificationSource& source,
+               const content::NotificationDetails& details) override {
     DCHECK_EQ(type, content::NOTIFICATION_WEB_CONTENTS_DESTROYED);
     contents_ = NULL;
   }
 
   content::WebContents* contents_;
   content::NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(WebContentsCloseObserver);
 };
 
@@ skipping 630 matching lines @@
       // behavior is desired because completing or skipping the sync promo
       // causes a redirect to the NTP.
       if (!startup_urls->empty() &&
           startup_urls->at(0) == GURL(chrome::kChromeUINewTabURL))
         startup_urls->at(0) = sync_promo_url;
       else
         startup_urls->insert(startup_urls->begin(), sync_promo_url);
     }
   }
 }