Resynthesize field formal parameters from Kernel.

pkg/analyzer/test/src/summary/resynthesize_common.dart

Index: pkg/analyzer/test/src/summary/resynthesize_common.dart
diff --git a/pkg/analyzer/test/src/summary/resynthesize_common.dart b/pkg/analyzer/test/src/summary/resynthesize_common.dart
index 38b9b1a5b3022b8e1c76632d090cae826a6fa7e0..5b633ec12026e3baf19e6ba92c582ac917a8e8b4 100644
--- a/pkg/analyzer/test/src/summary/resynthesize_common.dart
+++ b/pkg/analyzer/test/src/summary/resynthesize_common.dart
@@ -1833,11 +1833,22 @@ class C {
     var library =
         await checkLibrary('class C { C(this.x); }', allowErrors: true);
     if (isStrongMode) {
-      checkElementText(library, r'''
+      if (isSharedFrontEnd) {
+        // Kernel does not store 'isFieldFormal' flag explicitly.
+        // We infer it from presence of the corresponding FieldInitializer.
+        // But if there is no field, there is no FieldInitializer.
+        checkElementText(library, r'''
+class C {
+  C(dynamic x);
+}
+''');
+      } else {
+        checkElementText(library, r'''
 class C {
   C(dynamic this.x);
 }
 ''');
+      }
     } else {
       checkElementText(library, r'''
 class C {
@@ -9803,7 +9814,7 @@ const dynamic a = null;
 class C {
   dynamic x;
   C([@
-        a/*location: test.dart;a?*/ dynamic this.x = null]);
+        a/*location: test.dart;a?*/ dynamic this.x]);
 }
 const dynamic a = null;
 ''');
@@ -9812,7 +9823,7 @@ const dynamic a = null;
 class C {
   dynamic x;
   C([@
-        a/*location: test.dart;a?*/ dynamic this.x = null]);
+        a/*location: test.dart;a?*/ dynamic this.x]);
 }
 const dynamic a = null;
 ''');
@@ -9913,13 +9924,13 @@ dynamic f(@
       checkElementText(library, r'''
 const dynamic a = null;
 dynamic f([@
-        a/*location: test.dart;a?*/ () → dynamic g = null]) {}
+        a/*location: test.dart;a?*/ () → dynamic g]) {}
 ''');
     } else {
       checkElementText(library, r'''
 const dynamic a = null;
 dynamic f([@
-        a/*location: test.dart;a?*/ () → dynamic g = null]) {}
+        a/*location: test.dart;a?*/ () → dynamic g]) {}
 ''');
     }
   }
@@ -10155,13 +10166,13 @@ dynamic f(@
       checkElementText(library, r'''
 const dynamic a = null;
 dynamic f([@
-        a/*location: test.dart;a?*/ dynamic x = null]) {}
+        a/*location: test.dart;a?*/ dynamic x]) {}
 ''');
     } else {
       checkElementText(library, r'''
 const dynamic a = null;
 dynamic f([@
-        a/*location: test.dart;a?*/ dynamic x = null]) {}
+        a/*location: test.dart;a?*/ dynamic x]) {}
 ''');
     }
   }