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

chrome/browser/ui/webui/extensions/extension_settings_browsertest.cc

 // 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.
 
 #include "chrome/browser/ui/webui/extensions/extension_settings_browsertest.h"
 
 #include "base/files/file_path.h"
 #include "base/path_service.h"
 #include "base/strings/string_number_conversions.h"
 #include "chrome/browser/chrome_notification_types.h"
@@ skipping 45 matching lines @@
   InstallExtension(extensions_data_dir.AppendASCII("good.crx"));
 }
 
 class MockAutoConfirmExtensionInstallPrompt : public ExtensionInstallPrompt {
  public:
   explicit MockAutoConfirmExtensionInstallPrompt(
       content::WebContents* web_contents)
     : ExtensionInstallPrompt(web_contents) {}
 
   // Proceed without confirmation prompt.
-  virtual void ConfirmInstall(
-      Delegate* delegate,
-      const Extension* extension,
-      const ShowDialogCallback& show_dialog_callback) override {
+  void ConfirmInstall(Delegate* delegate,
+                      const Extension* extension,
+                      const ShowDialogCallback& show_dialog_callback) override {
     delegate->InstallUIProceed();
   }
 };
 
 const Extension* ExtensionSettingsUIBrowserTest::InstallExtension(
     const base::FilePath& path) {
   Profile* profile = this->GetProfile();
   ExtensionService* service =
       extensions::ExtensionSystem::Get(profile)->extension_service();
   service->set_show_extensions_prompts(false);
@@ skipping 44 matching lines @@
          iter != errors->end(); ++iter)
       VLOG(1) << *iter;
 
     return NULL;
   }
 
   if (!observer_->WaitForExtensionViewsToLoad())
     return NULL;
   return service->GetExtensionById(last_loaded_extension_id(), false);
 }