Use the entity model for dump_info.

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 1085 matching lines @@
   MemberElement get memberContext;
 }
 
 /// A top-level, static or instance field or method, or a constructor.
 ///
 /// A [MemberElement] is the outermost executable element for any executable
 /// context.
 abstract class MemberElement extends Element
     implements ExecutableElement, MemberEntity {
   /// The local functions defined within this member.
-  List<FunctionElement> get nestedClosures;
+  List<MethodElement> get nestedClosures;
 
   /// The name of this member, taking privacy into account.
   Name get memberName;
 }
 
 /// A function, variable or parameter defined in an executable context.
 abstract class LocalElement extends Element
     implements AstElement, TypedElement, Local {
   ExecutableElement get executableContext;
 }
@@ skipping 787 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;
 }