Always apply new type arguments in InterfaceTypeImpl.substitute2().

pkg/analyzer/test/src/summary/top_level_inference_test.dart

 // Copyright (c) 2017, 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.
 
 import 'dart:async';
 
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/src/dart/analysis/driver.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
@@ skipping 1504 matching lines @@
 }
 ''');
   }
 
   test_instanceField_functionTypeAlias_doesNotUseItsTypeParameter() async {
     var library = await _encodeDecodeLibrary(r'''
 typedef F<T>();
 
 class A<T> {
   F<T> get x => null;
+  List<F<T>> get y => null;
 }
 
 class B extends A<int> {
   get x => null;
+  get y => null;
 }
 ''');
     checkElementText(
         library,
         r'''
 typedef dynamic F<T>();
 class A<T> {
   F<T> get x {}
+  List<F<T>> get y {}
 }
 class B extends A<int> {
   F<int> get x {}
+  List<F<int>> get y {}
 }
 ''');
   }
 
   test_instanceField_inheritsCovariant_fromSetter_field() async {
     var library = await _encodeDecodeLibrary(r'''
 abstract class A {
   num get x;
   void set x(covariant num _);
 }
@@ skipping 656 matching lines @@
 
   Future<LibraryElement> _encodeDecodeLibrary(String text) async {
     String path = _p('/test.dart');
     provider.newFile(path, text);
     UnitElementResult result = await driver.getUnitElement(path);
     return result.element.library;
   }
 
   String _p(String path) => provider.convertPath(path);
 }