Add summary support for ParameterElement.defaultValueCode.

pkg/analyzer/lib/src/generated/testing/element_factory.dart

 // Copyright (c) 2014, 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 analyzer.src.generated.testing.element_factory;
 
 import 'dart:collection';
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart';
@@ skipping 483 matching lines @@
   }
 
   static ParameterElementImpl namedParameter2(String name, DartType type) {
     ParameterElementImpl parameter = new ParameterElementImpl(name, 0);
     parameter.parameterKind = ParameterKind.NAMED;
     parameter.type = type;
     return parameter;
   }
 
   static ParameterElementImpl namedParameter3(String name,
-      {DartType type, Expression initializer}) {
+      {DartType type, Expression initializer, String initializerCode}) {
     DefaultParameterElementImpl parameter =
         new DefaultParameterElementImpl(name, 0);
     parameter.parameterKind = ParameterKind.NAMED;
     parameter.type = type;
     parameter.constantInitializer = initializer;
+    parameter.defaultValueCode = initializerCode;
     return parameter;
   }
 
   static ParameterElementImpl positionalParameter(String name) {
     ParameterElementImpl parameter = new ParameterElementImpl(name, 0);
     parameter.parameterKind = ParameterKind.POSITIONAL;
     return parameter;
   }
 
   static ParameterElementImpl positionalParameter2(String name, DartType type) {
@@ skipping 122 matching lines @@
   }
 
   static TypeParameterElementImpl typeParameterWithType(String name,
       [DartType bound]) {
     TypeParameterElementImpl typeParameter = typeParameterElement(name);
     typeParameter.type = new TypeParameterTypeImpl(typeParameter);
     typeParameter.bound = bound;
     return typeParameter;
   }
 }