Fix deprecation message

lib/src/codegen/js_codegen.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.
 
 import 'dart:collection' show HashSet, HashMap, SplayTreeSet;
 
 import 'package:analyzer/analyzer.dart' hide ConstantEvaluator;
 import 'package:analyzer/dart/ast/token.dart';
 import 'package:analyzer/src/generated/ast.dart' hide ConstantEvaluator;
 import 'package:analyzer/src/generated/constant.dart';
@@ skipping 3188 matching lines @@
     // Like the Dart VM, we call cancel() always, as it's safe to call if the
     // stream has already been cancelled.
     //
     // TODO(jmesserly): we may want a helper if these become common. For now the
     // full desugaring seems okay.
     var context = compiler.context;
     var dart_async = context
         .computeLibraryElement(context.sourceFactory.forUri('dart:async'));
     var T = node.loopVariable.element.type;
     var StreamIterator_T =
-        dart_async.getType('StreamIterator').type.substitute4([T]);
+        dart_async.getType('StreamIterator').type.instantiate([T]);
 
     var createStreamIter = _emitInstanceCreationExpression(
         StreamIterator_T.element.unnamedConstructor,
         StreamIterator_T,
         null,
         AstBuilder.argumentList([node.iterable]),
         false);
     var iter =
         _visit(_createTemporary('it', StreamIterator_T, nullable: false));
 
@@ skipping 623 matching lines @@
 
 /// A special kind of element created by the compiler, signifying a temporary
 /// variable. These objects use instance equality, and should be shared
 /// everywhere in the tree where they are treated as the same variable.
 class TemporaryVariableElement extends LocalVariableElementImpl {
   TemporaryVariableElement.forNode(Identifier name) : super.forNode(name);
 
   int get hashCode => identityHashCode(this);
   bool operator ==(Object other) => identical(this, other);
 }