Fix annotation of promoted parameters in Fasta inference tests.

pkg/front_end/testcases/inference/downwards_inference_on_instance_creations_infer_downwards.dart

Index: pkg/front_end/testcases/inference/downwards_inference_on_instance_creations_infer_downwards.dart
diff --git a/pkg/front_end/testcases/inference/downwards_inference_on_instance_creations_infer_downwards.dart b/pkg/front_end/testcases/inference/downwards_inference_on_instance_creations_infer_downwards.dart
index ad38670fa3deebdbee08f3efca233478415a50cb..7fb31ad5fbcf4b9fa1cf2f50dce36b93b9b824c2 100644
--- a/pkg/front_end/testcases/inference/downwards_inference_on_instance_creations_infer_downwards.dart
+++ b/pkg/front_end/testcases/inference/downwards_inference_on_instance_creations_infer_downwards.dart
@@ -13,27 +13,31 @@ class A<S, T> {
 }
 
 class B<S, T> extends A<T, S> {
-  B(S y, T x) : super(x, y);
-  B.named(S y, T x) : super.named(x, y);
+  B(S y, T x) : super(/*@promotedType=none*/ x, /*@promotedType=none*/ y);
+  B.named(S y, T x)
+      : super.named(/*@promotedType=none*/ x, /*@promotedType=none*/ y);
 }
 
 class C<S> extends B<S, S> {
-  C(S a) : super(a, a);
-  C.named(S a) : super.named(a, a);
+  C(S a) : super(/*@promotedType=none*/ a, /*@promotedType=none*/ a);
+  C.named(S a)
+      : super.named(/*@promotedType=none*/ a, /*@promotedType=none*/ a);
 }
 
 class D<S, T> extends B<T, int> {
-  D(T a) : super(a, 3);
-  D.named(T a) : super.named(a, 3);
+  D(T a) : super(/*@promotedType=none*/ a, 3);
+  D.named(T a) : super.named(/*@promotedType=none*/ a, 3);
 }
 
 class E<S, T> extends A<C<S>, T> {
-  E(T a) : super(null, a);
+  E(T a) : super(null, /*@promotedType=none*/ a);
 }
 
 class F<S, T> extends A<S, T> {
-  F(S x, T y, {List<S> a, List<T> b}) : super(x, y);
-  F.named(S x, T y, [S a, T b]) : super(a, b);
+  F(S x, T y, {List<S> a, List<T> b})
+      : super(/*@promotedType=none*/ x, /*@promotedType=none*/ y);
+  F.named(S x, T y, [S a, T b])
+      : super(/*@promotedType=none*/ a, /*@promotedType=none*/ b);
 }
 
 void main() {