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

content/browser/accessibility/dump_accessibility_tree_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 <set>
 #include <string>
 #include <vector>
 
 #include "base/command_line.h"
 #include "base/files/file_util.h"
@@ skipping 128 matching lines @@
       } else if (StartsWithASCII(line, deny_str, true)) {
         filters->push_back(Filter(base::UTF8ToUTF16(
                                       line.substr(deny_str.size())),
                                   Filter::DENY));
       } else if (StartsWithASCII(line, wait_str, true)) {
         *wait_for = line.substr(wait_str.size());
       }
     }
   }
 
-  virtual void SetUpCommandLine(base::CommandLine* command_line) override {
+  void SetUpCommandLine(base::CommandLine* command_line) override {
     ContentBrowserTest::SetUpCommandLine(command_line);
     // Enable <dialog>, which is used in some tests.
     base::CommandLine::ForCurrentProcess()->AppendSwitch(
         switches::kEnableExperimentalWebPlatformFeatures);
   }
 
   void RunTest(const base::FilePath::CharType* file_path);
 };
 
 void DumpAccessibilityTreeTest::RunTest(
@@ skipping 716 matching lines @@
 
 IN_PROC_BROWSER_TEST_F(DumpAccessibilityTreeTest, AccessibilityUl) {
   RunTest(FILE_PATH_LITERAL("ul.html"));
 }
 
 IN_PROC_BROWSER_TEST_F(DumpAccessibilityTreeTest, AccessibilityWbr) {
   RunTest(FILE_PATH_LITERAL("wbr.html"));
 }
 
 }  // namespace content