How to mask window.parent inside iframe using google chrome extension?

Question

JavaScript

I am creating a VKontakte bot in the form of a browser plugin. For the convenience of control, I want to run the bot inside the frame, for which I specifically provided for the removal of the X-Frame-Options header in background.js:

chrome.webRequest.onHeadersReceived.addListener(

    function(info) { 
  
    var headers = info.responseHeaders; // Получаем массив отсылаемых заголовков
    
    // Обходим массив полученных заголовков:
    
    for (var i=headers.length-1; i>=0; --i) {
      
      var header = headers[i].name.toLowerCase(); // Считываем название того или иного заголовка
      
      // При наличии совпадений, удаляем заголовок нахрен:
      
      if (header == 'x-frame-options' || header == 'frame-options') { 
        headers.splice(i, 1);
      }
      
    }
    
    return {responseHeaders: headers}; // Вовращаем почищенный массив заголовков назад
    
    },
  
    { urls: [ '<all_urls>' ], types: [ 'sub_frame' ] },
  
    ['blocking', 'responseHeaders']
  
);

However, this was not enough, since VKontakte also uses a manual check for the fact that the page is loading in the frame. Here's a piece of code that simply deletes the page if it's a frame

: Ideally, I would like to know, is it possible to completely disguise the frame under the main window window.top with the help of an extension? I would appreciate advice from more experienced colleagues.