function isSafariDesktopOnMobile() {
  return platform.isMacintosh() && goog.global.navigator.maxTouchPoints > 0;
}
Checks whether the browser appears to be a desktop-class running on a mobile
device. Starting with iPadOS 13 this is the default for non-mini iPads
running at >=2/3 of the screen. The user agent is otherwise indistinguishable
from Mac Safari. The user can also force desktop on other devices. This logic
previously also checked for Safari, however other iOS browsers have since
adopted the same behavior.

@return {boolean} Whether the runtime heuristics thinks this is Desktop
Safari on a non-desktop device.