Revert "dart2js cps: 'is' checks on types with type arguments."

pkg/compiler/lib/src/dart_backend/backend_ast_emitter.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 backend_ast_emitter;
 
 import '../tree_ir/tree_ir_nodes.dart' as tree;
 import 'backend_ast_nodes.dart';
 import '../constants/expressions.dart';
 import '../constants/values.dart';
@@ skipping 720 matching lines @@
     List<TypeAnnotation> typeArguments = exp.type.treatAsRaw
         ? null
         : exp.type.typeArguments.map(TypeGenerator.createType)
              .toList(growable: false);
     return new LiteralMap(entries, typeArguments: typeArguments);
   }
 
   @override
   Expression visitTypeOperator(tree.TypeOperator exp,
                                BuilderContext<Statement> context) {
-    return new TypeOperator(visitExpression(exp.value, context),
+    return new TypeOperator(visitExpression(exp.receiver, context),
                             exp.operator,
                             TypeGenerator.createType(exp.type));
   }
 
   List<Argument> emitArguments(List<Expression> arguments,
                                Selector selector) {
     int positionalArgumentCount = selector.positionalArgumentCount;
     List<Argument> result = new List<Argument>.generate(positionalArgumentCount,
         (i) => arguments[i]);
     for (int i = 0; i < selector.namedArgumentCount; ++i) {
@@ skipping 690 matching lines @@
       : super(name, ElementKind.VARIABLE, enclosingElement, variables, null);
 
   ExecutableElement get executableContext => enclosingElement;
 
   ExecutableElement get memberContext => executableContext.memberContext;
 
   bool get isLocal => true;
 
   LibraryElement get implementationLibrary => enclosingElement.library;
 }