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

chrome/browser/extensions/extension_browsertest.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/extensions/extension_browsertest.h"
 
 #include <vector>
 
 #include "base/command_line.h"
 #include "base/files/file_path.h"
@@ skipping 330 matching lines @@
   return crx_path;
 }
 
 // This class is used to simulate an installation abort by the user.
 class MockAbortExtensionInstallPrompt : public ExtensionInstallPrompt {
  public:
   MockAbortExtensionInstallPrompt() : ExtensionInstallPrompt(NULL) {
   }
 
   // Simulate a user abort on an extension installation.
-  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->InstallUIAbort(true);
     base::MessageLoopForUI::current()->Quit();
   }
 
-  virtual void OnInstallSuccess(const Extension* extension,
-                                SkBitmap* icon) override {}
+  void OnInstallSuccess(const Extension* extension, SkBitmap* icon) override {}
 
-  virtual void OnInstallFailure(
-      const extensions::CrxInstallerError& error) override {}
+  void OnInstallFailure(const extensions::CrxInstallerError& error) override {}
 };
 
 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* ExtensionBrowserTest::UpdateExtensionWaitForIdle(
     const std::string& id,
     const base::FilePath& path,
     int expected_change) {
   return InstallOrUpdateExtension(id,
                                   path,
@@ skipping 270 matching lines @@
   return extensions::browsertest_util::ExecuteScriptInBackgroundPage(
       profile(), extension_id, script);
 }
 
 bool ExtensionBrowserTest::ExecuteScriptInBackgroundPageNoWait(
     const std::string& extension_id,
     const std::string& script) {
   return extensions::browsertest_util::ExecuteScriptInBackgroundPageNoWait(
       profile(), extension_id, script);
 }