How does Chrome's “Request Desktop Site” option work?

Question

For iOS google chrome, when a user hits the \"Request desktop site\" button what does the browser do to try to bring up a desktop site? I imagine some sort of header on the

Answer 1

This javascript snippet will effectively do the same :

function requestDesktopSite() {
    document.getElementsByTagName('meta')['viewport'].content='min-width: 980px;';
}

Request Desktop Site