Standardize usage of virtual/override/final in chrome/

chrome/test/base/in_process_browser_test.h

 // 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.
 
 #ifndef CHROME_TEST_BASE_IN_PROCESS_BROWSER_TEST_H_
 #define CHROME_TEST_BASE_IN_PROCESS_BROWSER_TEST_H_
 
 #include "base/compiler_specific.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/memory/ref_counted.h"
@@ skipping 105 matching lines @@
                      ui::PageTransition transition);
 
   // Initializes the contents of the user data directory. Called by SetUp()
   // after creating the user data directory, but before any browser is launched.
   // If a test wishes to set up some initial non-empty state in the user data
   // directory before the browser starts up, it can do so here. Returns true if
   // successful.
   virtual bool SetUpUserDataDirectory() WARN_UNUSED_RESULT;
 
   // BrowserTestBase:
-  virtual void RunTestOnMainThreadLoop() override;
+  void RunTestOnMainThreadLoop() override;
 
   // Creates a browser with a single tab (about:blank), waits for the tab to
   // finish loading and shows the browser.
   //
   // This is invoked from Setup.
   Browser* CreateBrowser(Profile* profile);
 
   // Similar to |CreateBrowser|, but creates an incognito browser.
   Browser* CreateIncognitoBrowser();
 
@@ skipping 71 matching lines @@
 #if defined(OS_MACOSX)
   base::mac::ScopedNSAutoreleasePool* autorelease_pool_;
 #endif  // OS_MACOSX
 
 #if defined(OS_WIN)
   scoped_ptr<base::win::ScopedCOMInitializer> com_initializer_;
 #endif
 };
 
 #endif  // CHROME_TEST_BASE_IN_PROCESS_BROWSER_TEST_H_