Standardize usage of virtual/override/final in content/browser/

content/browser/child_process_launcher_browsertest.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/command_line.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/test/content_browser_test.h"
 #include "content/public/test/content_browser_test_utils.h"
 
 namespace content {
 
 typedef ContentBrowserTest ChildProcessLauncherBrowserTest;
 
 class StatsTableBrowserTest : public ChildProcessLauncherBrowserTest {
  public:
-  virtual void SetUpCommandLine(base::CommandLine* command_line) override {
+  void SetUpCommandLine(base::CommandLine* command_line) override {
     command_line->AppendSwitch(switches::kEnableStatsTable);
   }
 };
 
 IN_PROC_BROWSER_TEST_F(StatsTableBrowserTest, StartWithStatTable) {
   NavigateToURL(shell(), GURL("about:blank"));
 }
 
 }  // namespace content