Fix type parameter element resolution for generics

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/element/element.dart';
@@ skipping 2595 matching lines @@
   }
 
   /**
    * Set the parameters defined by this type alias to the given [parameters]
    * without becoming the parent of the parameters. This should only be used by
    * the [TypeResolverVisitor] when creating a synthetic type alias.
    */
   void shareParameters(List<ParameterElement> parameters) {
     this._parameters = parameters;
   }
+
+  /**
+   * Set the type parameters defined by this type alias to the given
+   * [parameters] without becoming the parent of the parameters. This should
+   * only be used by the [TypeResolverVisitor] when creating a synthetic type
+   * alias.
+   */
+  void shareTypeParameters(List<TypeParameterElement> typeParameters) {
+    this._typeParameters = typeParameters;
+  }
 }
 
 /**
  * A concrete implementation of a [FunctionTypeAliasElement].
  */
 class FunctionTypeAliasElementImpl extends ElementImpl
     implements FunctionTypeAliasElement {
   /**
    * A list containing all of the parameters defined by this type alias.
    */
@@ skipping 1951 matching lines @@
 
   @override
   void visitElement(Element element) {
     int offset = element.nameOffset;
     if (offset != -1) {
       map[offset] = element;
     }
     super.visitElement(element);
   }
 }