Support for @JS() validation (#26225).

pkg/analyzer/lib/src/dart/element/handle.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.generated.element_handle;
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/constant/value.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/type.dart';
@@ skipping 44 matching lines @@
   @override
   List<InterfaceType> get interfaces => actualElement.interfaces;
 
   @override
   bool get isAbstract => actualElement.isAbstract;
 
   @override
   bool get isEnum => actualElement.isEnum;
 
   @override
+  bool get isJS => actualElement.isJS;
+
+  @override
   bool get isMixinApplication => actualElement.isMixinApplication;
 
   @override
   bool get isOrInheritsProxy => actualElement.isOrInheritsProxy;
 
   @override
   bool get isProxy => actualElement.isProxy;
 
   @override
   bool get isRequired => actualElement.isRequired;
@@ skipping 271 matching lines @@
   @override
   Element get enclosingElement => actualElement.enclosingElement;
 
   @override
   int get hashCode => _location.hashCode;
 
   @override
   bool get isDeprecated => actualElement.isDeprecated;
 
   @override
+  bool get isJS => actualElement.isJS;
+
+  @override
   bool get isOverride => actualElement.isOverride;
 
   @override
   bool get isPrivate => actualElement.isPrivate;
 
   @override
   bool get isProtected => actualElement.isProtected;
 
   @override
   bool get isPublic => actualElement.isPublic;
@@ skipping 733 matching lines @@
   @override
   bool get isPotentiallyMutatedInScope =>
       actualElement.isPotentiallyMutatedInScope;
 
   @override
   bool get isStatic => actualElement.isStatic;
 
   @override
   DartType get type => actualElement.type;
 }