Summarize references to closure parameters properly.

pkg/analyzer/lib/src/summary/summarize_elements.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 serialization.elements;
 
 import 'dart:convert';
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/element/element.dart';
@@ skipping 1292 matching lines @@
   /**
    * If a constructor initializer expression is being serialized, the names of
    * the constructor parameters.  Otherwise `null`.
    */
   final Set<String> constructorParameterNames;
 
   _ConstExprSerializer(this.serializer, this.context, this.executableContext,
       this.constructorParameterNames);
 
   @override
-  bool isConstructorParameterName(String name) {
+  bool isParameterName(String name) {
     return constructorParameterNames?.contains(name) ?? false;
   }
 
   @override
   void serializeAnnotation(Annotation annotation) {
     if (annotation.arguments == null) {
       assert(annotation.constructorName == null);
       serialize(annotation.name);
     } else {
       Identifier name = annotation.name;
@@ skipping 351 matching lines @@
       exportNames.add(new LinkedExportNameBuilder(
           name: name,
           dependency: serializeDependency(dependentLibrary),
           unit: unit,
           kind: kind));
     }
     pb.exportNames = exportNames;
     return pb;
   }
 }