[Neftali [Germán.Estévez]]

No tienes que cambiar la forma de llamarla.

Es una dirección web. Prueba a construirla pasando la dirección y usando el mismo código que has puesto.

Una llamada con esta URL:
http://maps.googleapis.com/maps/api/...n&sensor=false

Devolverá con ese código un fichero como este:

Código Delphi [-]
{
   "results" : [
      {
         "address_components" : [
            {
               "long_name" : "Barcelona",
               "short_name" : "Barcelona",
               "types" : [ "locality", "political" ]
            },
            {
               "long_name" : "Barcelona",
               "short_name" : "Barcelona",
               "types" : [ "political" ]
            },
            {
               "long_name" : "Barcelona",
               "short_name" : "B",
               "types" : [ "administrative_area_level_2", "political" ]
            },
            {
               "long_name" : "Cataluña",
               "short_name" : "CT",
               "types" : [ "administrative_area_level_1", "political" ]
            },
            {
               "long_name" : "España",
               "short_name" : "ES",
               "types" : [ "country", "political" ]
            }
         ],
         "formatted_address" : "Barcelona, España",
         "geometry" : {
            "bounds" : {
               "northeast" : {
                  "lat" : 41.4695761,
                  "lng" : 2.2280099
               },
               "southwest" : {
                  "lat" : 41.320004,
                  "lng" : 2.0695258
               }
            },
            "location" : {
               "lat" : 41.3850639,
               "lng" : 2.1734035
            },
            "location_type" : "APPROXIMATE",
            "viewport" : {
               "northeast" : {
                  "lat" : 41.4695761,
                  "lng" : 2.2280099
               },
               "southwest" : {
                  "lat" : 41.320004,
                  "lng" : 2.0695258
               }
            }
         },
         "types" : [ "locality", "political" ]
      }
   ],
   "status" : "OK"
}