Don't instantiate a new InterfaceTypeImpl for a ClassElement without type parameters.

pkg/analyzer/lib/src/summary/resynthesize.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 summary_resynthesizer;
 
 import 'dart:collection';
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/standard_ast_factory.dart';
@@ skipping 1291 matching lines @@
    * [EntityRef.implicitFunctionTypeIndices].
    */
   DartType _buildType(bool instantiateToBoundsAllowed, int numTypeArguments,
       DartType getTypeArgument(int i), List<int> implicitFunctionTypeIndices) {
     ElementHandle element = this.element; // To allow type promotion
     if (element is ClassElementHandle) {
       List<DartType> typeArguments = null;
       // If type arguments are specified, use them.
       // Otherwise, delay until they are requested.
       if (numTypeParameters == 0) {
-        typeArguments = const <DartType>[];
+        return element.type;
       } else if (numTypeArguments == numTypeParameters) {
         typeArguments = new List<DartType>(numTypeParameters);
         for (int i = 0; i < numTypeParameters; i++) {
           typeArguments[i] = getTypeArgument(i);
         }
       }
       InterfaceTypeImpl type =
           new InterfaceTypeImpl.elementWithNameAndArgs(element, name, () {
         if (typeArguments == null) {
           typeArguments = element.typeParameters
@@ skipping 589 matching lines @@
   static String _getElementIdentifier(String name, ReferenceKind kind) {
     if (kind == ReferenceKind.topLevelPropertyAccessor ||
         kind == ReferenceKind.propertyAccessor) {
       if (!name.endsWith('=')) {
         return name + '?';
       }
     }
     return name;
   }
 }