Permissions: use newly supported required attribute on Dictionary properties.

LayoutTests/http/tests/permissions/resources/test-query.js

Index: LayoutTests/http/tests/permissions/resources/test-query.js
diff --git a/LayoutTests/http/tests/permissions/resources/test-query.js b/LayoutTests/http/tests/permissions/resources/test-query.js
index db750cda5d23d9fcea20c9ed3f283436bfc606ff..92ea73187ec1977cbf5bce901a033c9acb705cd6 100644
--- a/LayoutTests/http/tests/permissions/resources/test-query.js
+++ b/LayoutTests/http/tests/permissions/resources/test-query.js
@@ -8,6 +8,23 @@ if (self.importScripts) {
 }
 
 async_test(function(test) {
+    // Querying a random permission name should fail.
+    navigator.permissions.query({name:'foobar'}).then(function(result) {
+        assert_unreached('querying a random permission should fail');
+    }, function(error) {
+        assert_equals(error.name, 'TypeError');
+
+        // Querying a permission without a name should fail.
+        return navigator.permissions.query({});
+    }).then(function(result) {
+        assert_unreached('querying a permission without a name should fail');
+    }, function(error) {
+        assert_equals(error.name, 'TypeError');
+        test.done();
+    });
+}, 'Test PermissionDescription WebIDL rules in ' + get_current_scope() + ' scope.');
+
+async_test(function(test) {
     navigator.permissions.query({name:'geolocation'}).then(function(result) {
         // TODO(mlamouri): test values when some instrumentation are available.
         assert_true(result instanceof PermissionStatus);