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

pkg/compiler/lib/src/cps_ir/cps_ir_tracer.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 dart2js.ir_tracer;
 
 import 'dart:async' show EventSink;
 
 import 'cps_ir_nodes.dart' as cps_ir hide Function;
 import '../tracer.dart';
@@ skipping 218 matching lines @@
       String value = formatReference(entry.value);
       entries.add("$key: $value");
     }
     printStmt(dummy, "LiteralMap (${entries.join(', ')})");
   }
 
   visitTypeOperator(cps_ir.TypeOperator node) {
     String dummy = names.name(node);
     String operator = node.isTypeTest ? 'is' : 'as';
     List<String> entries = new List<String>();
-    String receiver = formatReference(node.receiver);
-    printStmt(dummy, "TypeOperator ($operator $receiver ${node.type})");
+    String value = formatReference(node.value);
+    String kont = formatReference(node.continuation);
+    printStmt(dummy, "TypeOperator ($operator $value ${node.type}) $kont");
   }
 
   visitInvokeContinuation(cps_ir.InvokeContinuation node) {
     String dummy = names.name(node);
     String kont = formatReference(node.continuation);
     String args = node.arguments.map(formatReference).join(', ');
     printStmt(dummy, "InvokeContinuation $kont ($args)");
   }
 
   visitBranch(cps_ir.Branch node) {
@@ skipping 406 matching lines @@
   }
 
   visitNonTailThrow(cps_ir.NonTailThrow node) {
     unexpectedNode(node);
   }
 
   visitCreateInvocationMirror(cps_ir.CreateInvocationMirror node) {
     unexpectedNode(node);
   }
 }