function eventDisabler(e) {
    // Allow our events to pass through.
    if (e['__wtf_dispatched__']) {
      return;
    }
    // Die die die.
    e.preventDefault();
    e.stopPropagation();
    return false;
  }
Attempts to shield the page from any user input by capturing and disabling
events and blocking input via overlays.
@private