original.html

<div id="map"></div>
    <script>
      function initMap() {
        var map = new google.maps.Map(document.getElementById('map'), {
          zoom: 17,
          center: {lat: 33.5085134, lng: -112.0338426},
          mapTypeId: 'terrain'
        });
        var McCain = {lat: 33.5085134, lng: -112.0338426};
        var Flake = {lat: 33.5096555, lng: -112.036279};
        var flightPlanCoordinates = [McCain, Flake];
        var flightPath = new google.maps.Polyline({
          path: flightPlanCoordinates,
          geodesic: true,
          strokeColor: '#FF0000',
          strokeOpacity: 1.0,
          strokeWeight: 2
        });

        flightPath.setMap(map);
      }
    </script>
    <script async defer
    src="https://maps.googleapis.com/maps/api/js?key=AIzaSyC5nrnwZenEbvnakw4HYs1raZBFQky3U7w&callback=initMap">
    </script>