Resynthesize values of final fields of classes with const constructors.

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

 // Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library test.src.serialization.elements_test;
 
 import 'dart:async';
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/standard_resolution_map.dart';
@@ skipping 2436 matching lines @@
 library lib;
 part 'a.dart';
 --------------------
 unit: a.dart
 
 final dynamic f;
 ''');
     }
   }
 
+  test_const_finalField_hasConstConstructor() async {
+    var library = await checkLibrary(r'''
+class C {
+  final int f = 42;
+  const C();
+}
+''');
+    checkElementText(library, r'''
+class C {
+  final int f = 42;
+  const C();
+}
+''');
+  }
+
   test_const_invalid_field_const() async {
     variablesWithNotConstInitializers.add('f');
     var library = await checkLibrary(r'''
 class C {
   static const f = 1 + foo();
 }
 int foo() => 42;
 ''', allowErrors: true);
     if (isStrongMode) {
       checkElementText(library, r'''
@@ skipping 7602 matching lines @@
       fail('Unexpectedly tried to get unlinked summary for $uri');
     }
     return serializedUnit;
   }
 
   @override
   bool hasLibrarySummary(String uri) {
     return true;
   }
 }