Standardize usage of virtual/override/final specifiers.

chrome/browser/signin/signin_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.
 
 #ifndef CHROME_BROWSER_SIGNIN_SIGNIN_BROWSERTEST_H_
 #define CHROME_BROWSER_SIGNIN_SIGNIN_BROWSERTEST_H_
 
 #include "base/command_line.h"
 #include "chrome/browser/signin/chrome_signin_client.h"
 #include "chrome/browser/signin/chrome_signin_client_factory.h"
@@ skipping 38 matching lines @@
     command_line->AppendSwitchASCII(
         switches::kHostResolverRules,
         "MAP * " + https_server_->host_port_pair().ToString() +
             ",EXCLUDE localhost");
     command_line->AppendSwitch(switches::kIgnoreCertificateErrors);
     // All tests in this file are for the web based sign in flows.
     // TODO(guohui): fix tests for inline sign in flows.
     command_line->AppendSwitch(switches::kEnableWebBasedSignin);
   }
 
-  virtual void SetUp() override {
+  void SetUp() override {
     factory_.reset(new net::URLFetcherImplFactory());
     fake_factory_.reset(new net::FakeURLFetcherFactory(factory_.get()));
     fake_factory_->SetFakeResponse(
         GaiaUrls::GetInstance()->service_login_url(), std::string(),
         net::HTTP_OK, net::URLRequestStatus::SUCCESS);
     fake_factory_->SetFakeResponse(
         GURL(kNonSigninURL), std::string(), net::HTTP_OK,
         net::URLRequestStatus::SUCCESS);
     // Yield control back to the InProcessBrowserTest framework.
     InProcessBrowserTest::SetUp();
   }
 
-  virtual void TearDown() override {
+  void TearDown() override {
     if (fake_factory_.get()) {
       fake_factory_->ClearFakeResponses();
       fake_factory_.reset();
     }
 
     // Cancel any outstanding URL fetches and destroy the URLFetcherImplFactory
     // we created.
     net::URLFetcher::CancelAll();
     factory_.reset();
     InProcessBrowserTest::TearDown();
@@ skipping 158 matching lines @@
   EXPECT_EQ(skip_url, web_contents->GetLastCommittedURL());
   EXPECT_EQ(start_url, web_contents->GetVisibleURL());
 
   content::WindowedNotificationObserver observer(
       content::NOTIFICATION_LOAD_STOP,
       content::NotificationService::AllSources());
   observer.Wait();
   EXPECT_EQ(start_url, web_contents->GetLastCommittedURL());
 }
 #endif  // CHROME_BROWSER_SIGNIN_SIGNIN_BROWSERTEST_H_