Restrict Component is not working

I am trying to restrict cities of Australia but unable to work here is my code.

From

and here is the controller:
function ShippingCalculatorController ($scope) {
var shipping = this;

shipping.placesOptions = {
componentRestrictions: {country: 'au'},
strictBounds: true
};

I have also tried

$scope.placesOptions = {
componentRestrictions: {country: 'au'},
strictBounds: true
};

but not working.

Start with the template's gm-places-autocomplete binding and ShippingCalculatorController's placesOptions entry point shown in the issue. Reproduce the autocomplete behavior with the displayed componentRestrictions and strictBounds settings; done means Australian city suggestions are restricted as intended.

Written by the indexing model from the issue text.