Update expectations for instance creations to match front_end.

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 51e3ca3bdddd35f5a39ef5c09df570b54120d292..ad38670fa3deebdbee08f3efca233478415a50cb 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
@@ -38,8 +38,8 @@ class F<S, T> extends A<S, T> {
 
 void main() {
   {
-    A<int, String> a0 = /*@typeArgs=int, String*/ new A(3, "hello");
-    A<int, String> a1 = /*@typeArgs=int, String*/ new A.named(3, "hello");
+    A<int, String> a0 = new /*@typeArgs=int, String*/ A(3, "hello");
+    A<int, String> a1 = new /*@typeArgs=int, String*/ A.named(3, "hello");
     A<int, String> a2 = new A<int, String>(3, "hello");
     A<int, String> a3 = new A<int, String>.named(3, "hello");
     A<int, String>
@@ -49,16 +49,16 @@ void main() {
             3, "hello");
   }
   {
-    A<int, String> a0 = /*@typeArgs=int, String*/ new A(
+    A<int, String> a0 = new /*@typeArgs=int, String*/ A(
         /*error:ARGUMENT_TYPE_NOT_ASSIGNABLE*/ "hello",
         /*error:ARGUMENT_TYPE_NOT_ASSIGNABLE*/ 3);
-    A<int, String> a1 = /*@typeArgs=int, String*/ new A.named(
+    A<int, String> a1 = new /*@typeArgs=int, String*/ A.named(
         /*error:ARGUMENT_TYPE_NOT_ASSIGNABLE*/ "hello",
         /*error:ARGUMENT_TYPE_NOT_ASSIGNABLE*/ 3);
   }
   {
-    A<int, String> a0 = /*@typeArgs=String, int*/ new B("hello", 3);
-    A<int, String> a1 = /*@typeArgs=String, int*/ new B.named("hello", 3);
+    A<int, String> a0 = new /*@typeArgs=String, int*/ B("hello", 3);
+    A<int, String> a1 = new /*@typeArgs=String, int*/ B.named("hello", 3);
     A<int, String> a2 = new B<String, int>("hello", 3);
     A<int, String> a3 = new B<String, int>.named("hello", 3);
     A<int, String>
@@ -68,30 +68,30 @@ void main() {
             "hello", 3);
   }
   {
-    A<int, String> a0 = /*@typeArgs=String, int*/ new B(
+    A<int, String> a0 = new /*@typeArgs=String, int*/ B(
         /*error:ARGUMENT_TYPE_NOT_ASSIGNABLE*/ 3,
         /*error:ARGUMENT_TYPE_NOT_ASSIGNABLE*/ "hello");
-    A<int, String> a1 = /*@typeArgs=String, int*/ new B.named(
+    A<int, String> a1 = new /*@typeArgs=String, int*/ B.named(
         /*error:ARGUMENT_TYPE_NOT_ASSIGNABLE*/ 3,
         /*error:ARGUMENT_TYPE_NOT_ASSIGNABLE*/ "hello");
   }
   {
-    A<int, int> a0 = /*@typeArgs=int*/ new C(3);
-    A<int, int> a1 = /*@typeArgs=int*/ new C.named(3);
+    A<int, int> a0 = new /*@typeArgs=int*/ C(3);
+    A<int, int> a1 = new /*@typeArgs=int*/ C.named(3);
     A<int, int> a2 = new C<int>(3);
     A<int, int> a3 = new C<int>.named(3);
     A<int, int> a4 = /*error:INVALID_ASSIGNMENT*/ new C<dynamic>(3);
     A<int, int> a5 = /*error:INVALID_ASSIGNMENT*/ new C<dynamic>.named(3);
   }
   {
-    A<int, int> a0 = /*@typeArgs=int*/ new C(
+    A<int, int> a0 = new /*@typeArgs=int*/ C(
         /*error:ARGUMENT_TYPE_NOT_ASSIGNABLE*/ "hello");
-    A<int, int> a1 = /*@typeArgs=int*/ new C.named(
+    A<int, int> a1 = new /*@typeArgs=int*/ C.named(
         /*error:ARGUMENT_TYPE_NOT_ASSIGNABLE*/ "hello");
   }
   {
-    A<int, String> a0 = /*@typeArgs=dynamic, String*/ new D("hello");
-    A<int, String> a1 = /*@typeArgs=dynamic, String*/ new D.named("hello");
+    A<int, String> a0 = new /*@typeArgs=dynamic, String*/ D("hello");
+    A<int, String> a1 = new /*@typeArgs=dynamic, String*/ D.named("hello");
     A<int, String> a2 = new D<int, String>("hello");
     A<int, String> a3 = new D<String, String>.named("hello");
     A<int, String>
@@ -101,34 +101,34 @@ void main() {
             "hello");
   }
   {
-    A<int, String> a0 = /*@typeArgs=dynamic, String*/ new D(
+    A<int, String> a0 = new /*@typeArgs=dynamic, String*/ D(
         /*error:ARGUMENT_TYPE_NOT_ASSIGNABLE*/ 3);
-    A<int, String> a1 = /*@typeArgs=dynamic, String*/ new D.named(
+    A<int, String> a1 = new /*@typeArgs=dynamic, String*/ D.named(
         /*error:ARGUMENT_TYPE_NOT_ASSIGNABLE*/ 3);
   }
   {
-    A<C<int>, String> a0 = /*@typeArgs=int, String*/ new E("hello");
+    A<C<int>, String> a0 = new /*@typeArgs=int, String*/ E("hello");
   }
   {
     // Check named and optional arguments
-    A<int, String> a0 = /*@typeArgs=int, String*/ new F(3, "hello",
+    A<int, String> a0 = new /*@typeArgs=int, String*/ F(3, "hello",
         a: /*@typeArgs=int*/ [3], b: /*@typeArgs=String*/ ["hello"]);
-    A<int, String> a1 = /*@typeArgs=int, String*/ new F(3, "hello",
+    A<int, String> a1 = new /*@typeArgs=int, String*/ F(3, "hello",
         a: /*@typeArgs=int*/ [
           /*error:LIST_ELEMENT_TYPE_NOT_ASSIGNABLE*/ "hello"
         ],
         b: /*@typeArgs=String*/ [
           /*error:LIST_ELEMENT_TYPE_NOT_ASSIGNABLE*/ 3
         ]);
-    A<int, String>
-        a2 = /*@typeArgs=int, String*/ new F.named(3, "hello", 3, "hello");
-    A<int, String> a3 = /*@typeArgs=int, String*/ new F.named(3, "hello");
-    A<int, String> a4 = /*@typeArgs=int, String*/ new F.named(
+    A<int, String> a2 =
+        new /*@typeArgs=int, String*/ F.named(3, "hello", 3, "hello");
+    A<int, String> a3 = new /*@typeArgs=int, String*/ F.named(3, "hello");
+    A<int, String> a4 = new /*@typeArgs=int, String*/ F.named(
         3,
         "hello",
         /*error:ARGUMENT_TYPE_NOT_ASSIGNABLE*/ "hello",
         /*error:ARGUMENT_TYPE_NOT_ASSIGNABLE*/ 3);
-    A<int, String> a5 = /*@typeArgs=int, String*/ new F.named(
+    A<int, String> a5 = new /*@typeArgs=int, String*/ F.named(
         3,
         "hello",
         /*error:ARGUMENT_TYPE_NOT_ASSIGNABLE*/ "hello");