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

chrome/browser/ui/webui/user_actions/user_actions_ui_handler.h

Index: chrome/browser/ui/webui/user_actions/user_actions_ui_handler.h
diff --git a/chrome/browser/ui/webui/user_actions/user_actions_ui_handler.h b/chrome/browser/ui/webui/user_actions/user_actions_ui_handler.h
index a637fce4942880116bbbe717d63e09b677b3bbb7..284d0d27fb1660aae7604a09de66b87b17416a1b 100644
--- a/chrome/browser/ui/webui/user_actions/user_actions_ui_handler.h
+++ b/chrome/browser/ui/webui/user_actions/user_actions_ui_handler.h
@@ -14,11 +14,11 @@
 class UserActionsUIHandler : public content::WebUIMessageHandler {
  public:
   UserActionsUIHandler();
-  virtual ~UserActionsUIHandler();
+  ~UserActionsUIHandler() override;
 
   // WebUIMessageHandler implementation:
   // Does nothing for now.
-  virtual void RegisterMessages() override;
+  void RegisterMessages() override;
 
  private:
   void OnUserAction(const std::string& action);