Standardize usage of virtual/override/final in chrome/browser/ui/

chrome/browser/ui/webui/extensions/extension_error_handler.h

Index: chrome/browser/ui/webui/extensions/extension_error_handler.h
diff --git a/chrome/browser/ui/webui/extensions/extension_error_handler.h b/chrome/browser/ui/webui/extensions/extension_error_handler.h
index c74ea3a3c2824c649f1850301c912d85bf6c3dd8..e1493ef98cf118f7e15aea262928e9f80881c067 100644
--- a/chrome/browser/ui/webui/extensions/extension_error_handler.h
+++ b/chrome/browser/ui/webui/extensions/extension_error_handler.h
@@ -31,13 +31,13 @@ class Extension;
 class ExtensionErrorHandler : public content::WebUIMessageHandler {
  public:
   explicit ExtensionErrorHandler(Profile* profile);
-  virtual ~ExtensionErrorHandler();
+  ~ExtensionErrorHandler() override;
 
   // Fetches the localized values for the page and deposits them into |source|.
   void GetLocalizedValues(content::WebUIDataSource* source);
 
   // WebUIMessageHandler implementation.
-  virtual void RegisterMessages() override;
+  void RegisterMessages() override;
 
  private:
   friend class ManifestHighlightUnitTest;