Add Geolocation field to List via SharePoint CSOM (JavaScript)

AddGeolocationFieldToContactsList.js

function ProvisionField(fieldSchema, listTitle,OnSuccess,OnError)
{
     var context = SP.ClientContext.get_current();
     var list = context.get_web().get_lists().getByTitle(listTitle);
     var fields = list.get_fields();
     var fieldToAdd = fields.addFieldAsXml(fieldSchema, true, SP.AddFieldOptions.AddToDefaultContentType);
     fieldToAdd.update();
     context.load(fieldToAdd);
     context.executeQueryAsync(OnSuccess(fieldToAdd),OnError);
}


function AddGeolocationFieldToContactsList()
{
    ProvisionField("<Field Type='Geolocation' DisplayName='Location'/>","Contacts",
    function(field){
        console.log('Geolocation field has been added');
    },
    function(sender,args){
        console.log('Error occured while adding Geolocation field:' + args.get_message());
    })
}