Fix for types of function-typed parameters in reified type of MethodElement.

pkg/analyzer/lib/src/dart/element/element.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.dart.element.element;
 
 import 'dart:collection';
 import 'dart:math' show min;
 
 import 'package:analyzer/dart/ast/ast.dart';
@@ skipping 6644 matching lines @@
       }
     }
 
     if (!hasCovariant) {
       return type;
     }
 
     List<ParameterElement> covariantParameters = parameters.map((parameter) {
       DartType type = parameter.isCovariant ? objectType : parameter.type;
       return new ParameterElementImpl.synthetic(
-          parameter.name, objectType, parameter.parameterKind);
+          parameter.name, type, parameter.parameterKind);
     }).toList();
 
     return new FunctionElementImpl.synthetic(covariantParameters, returnType)
         .type;
   }
 }
 
 /**
  * The constants for all of the modifiers defined by the Dart language and for a
  * few additional flags that are useful.
@@ skipping 2404 matching lines @@
 
   @override
   void visitElement(Element element) {
     int offset = element.nameOffset;
     if (offset != -1) {
       map[offset] = element;
     }
     super.visitElement(element);
   }
 }