Handle instance fields in compile_from_dill_test

pkg/compiler/lib/src/elements/elements.dart

 // Copyright (c) 2012, 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 elements;
 
 import '../common.dart';
 import '../common/resolution.dart' show Resolution;
 import '../constants/constructors.dart';
 import '../constants/expressions.dart';
@@ skipping 1505 matching lines @@
   /// because it does not take parameterized types into account.
   bool isSubclassOf(ClassElement cls);
 
   /// Returns `true` if this class explicitly implements [intrface].
   ///
   /// Note that, if [intrface] is the `Function` class, this method returns
   /// false for a class that has a `call` method but does not explicitly
   /// implement `Function`.
   bool implementsInterface(ClassElement intrface);
 
-  bool hasFieldShadowedBy(Element fieldMember);
+  bool hasFieldShadowedBy(FieldElement fieldMember);
 
   /// Returns `true` if this class has a @proxy annotation.
   bool get isProxy;
 
   /// Returns `true` if the class hierarchy for this class contains errors.
   bool get hasIncompleteHierarchy;
 
   void addConstructorBody(ConstructorBodyElement element);
 
   Element lookupMember(String memberName);
@@ skipping 360 matching lines @@
   /// by a field.
   bool get isDeclaredByField;
 
   /// Returns `true` if this member is abstract.
   bool get isAbstract;
 
   /// If abstract, [implementation] points to the overridden concrete member,
   /// if any. Otherwise [implementation] points to the member itself.
   Member get implementation;
 }