Fix annotation of promoted parameters in Fasta inference tests.

pkg/front_end/testcases/inference/downwards_inference_on_function_expressions.dart

Index: pkg/front_end/testcases/inference/downwards_inference_on_function_expressions.dart
diff --git a/pkg/front_end/testcases/inference/downwards_inference_on_function_expressions.dart b/pkg/front_end/testcases/inference/downwards_inference_on_function_expressions.dart
index 04a20f2afd3aaabf164212510254394d8100251d..f63dcdb8e54b473a225b946eb85cc6ac341cf121 100644
--- a/pkg/front_end/testcases/inference/downwards_inference_on_function_expressions.dart
+++ b/pkg/front_end/testcases/inference/downwards_inference_on_function_expressions.dart
@@ -32,7 +32,7 @@ void main() {
       return /*error:RETURN_OF_INVALID_TYPE*/ 3;
     };
     Function2<int, String> l4 = /*@returnType=String*/ (/*@type=int*/ x) {
-      return /*error:RETURN_OF_INVALID_TYPE*/ x;
+      return /*error:RETURN_OF_INVALID_TYPE*/ /*@promotedType=none*/ x;
     };
   }
   {
@@ -54,15 +54,19 @@ void main() {
     };
   }
   {
-    Function2<int, int> l0 = /*@returnType=int*/ (/*@type=int*/ x) => x;
-    Function2<int, int> l1 = /*@returnType=int*/ (/*@type=int*/ x) => x + 1;
+    Function2<int, int>
+        l0 = /*@returnType=int*/ (/*@type=int*/ x) => /*@promotedType=none*/ x;
+    Function2<int, int>
+        l1 = /*@returnType=int*/ (/*@type=int*/ x) => /*@promotedType=none*/ x +
+            1;
     Function2<int, String>
         l2 = /*error:INVALID_ASSIGNMENT*/ /*@returnType=int*/ (/*@type=int*/ x) =>
-            x;
+            /*@promotedType=none*/ x;
     Function2<int, String>
-        l3 = /*@returnType=String*/ (/*@type=int*/ x) => /*info:DYNAMIC_CAST, info:DYNAMIC_INVOKE*/ x
+        l3 = /*@returnType=String*/ (/*@type=int*/ x) => /*info:DYNAMIC_CAST, info:DYNAMIC_INVOKE*/ /*@promotedType=none*/ x
             .substring(3);
     Function2<String, String>
-        l4 = /*@returnType=String*/ (/*@type=String*/ x) => x.substring(3);
+        l4 = /*@returnType=String*/ (/*@type=String*/ x) => /*@promotedType=none*/ x
+            .substring(3);
   }
 }