title: Load any site within an iframe using the browser webRequest API?
body: <p>I'm developing a chrome extension where I need to load a webpage inside of an iframe. I can make some websites load within the iframe, but others have something blocking it. E.g. <a href="https://amazon.ca" rel="nofollow noreferrer">https://amazon.ca</a> will load inside the iframe, but not <a href="https://shop.lululemon.com/" rel="nofollow noreferrer">https://shop.lululemon.com/</a>.</p>
  <p>Can I use the webRequest API to modify the headers and load the page? Or some other workaround?</p>