Standardize usage of virtual/override/final in content/

content/shell/browser/layout_test/layout_test_browser_main_parts.h

 // 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.
 
 #ifndef CONTENT_SHELL_BROWSER_LAYOUT_TEST_BROWSER_MAIN_PARTS_H_
 #define CONTENT_SHELL_BROWSER_LAYOUT_TEST_BROWSER_MAIN_PARTS_H_
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "content/shell/browser/shell_browser_main_parts.h"
@@ skipping 12 matching lines @@
 class NetLog;
 }
 
 namespace content {
 
 class ShellPluginServiceFilter;
 
 class LayoutTestBrowserMainParts : public ShellBrowserMainParts {
  public:
   explicit LayoutTestBrowserMainParts(const MainFunctionParams& parameters);
-  virtual ~LayoutTestBrowserMainParts();
+  ~LayoutTestBrowserMainParts() override;
 
  private:
-  virtual void InitializeBrowserContexts() override;
-  virtual void InitializeMessageLoopContext() override;
+  void InitializeBrowserContexts() override;
+  void InitializeMessageLoopContext() override;
 
 #if defined(ENABLE_PLUGINS)
   scoped_ptr<ShellPluginServiceFilter> plugin_service_filter_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(LayoutTestBrowserMainParts);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_SHELL_BROWSER_LAYOUT_TEST_BROWSER_MAIN_PARTS_H_