Update {virtual,override} to follow C++11 style in chrome.

chrome/browser/extensions/api/automation/automation_apitest.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 "base/files/file_path.h"
 #include "base/path_service.h"
 #include "base/strings/string_number_conversions.h"
 #include "chrome/browser/extensions/api/automation_internal/automation_util.h"
 #include "chrome/browser/extensions/chrome_extension_function.h"
 #include "chrome/browser/extensions/extension_apitest.h"
@@ skipping 46 matching lines @@
     base::FilePath test_data;
     ASSERT_TRUE(PathService::Get(chrome::DIR_TEST_DATA, &test_data));
     embedded_test_server()->ServeFilesFromDirectory(
         test_data.AppendASCII("extensions/api_test")
         .AppendASCII(kSitesDir));
     ASSERT_TRUE(ExtensionApiTest::StartEmbeddedTestServer());
     host_resolver()->AddRule("*", embedded_test_server()->base_url().host());
   }
 
  public:
-  virtual void SetUpInProcessBrowserTestFixture() override {
+  void SetUpInProcessBrowserTestFixture() override {
     ExtensionApiTest::SetUpInProcessBrowserTestFixture();
   }
 };
 
 IN_PROC_BROWSER_TEST_F(AutomationApiTest, TestRendererAccessibilityEnabled) {
   StartEmbeddedTestServer();
   const GURL url = GetURLForPath(kDomain, "/index.html");
   ui_test_utils::NavigateToURL(browser(), url);
 
   ASSERT_EQ(1, browser()->tab_strip_model()->count());
@@ skipping 459 matching lines @@
       "automationInternal.enableTab",
       FakeAutomationInternalEnableTabFunctionFactory));
   ASSERT_TRUE(extensions::ExtensionFunctionDispatcher::OverrideFunction(
       "automationInternal.performAction",
       FakeAutomationInternalPerformActionFunctionFactory));
   ASSERT_TRUE(RunExtensionSubtest("automation/tests/generated",
                                   "generated_trees.html")) << message_;
 }
 
 }  // namespace extensions