dart2js cps: Keep interceptors in a separate field.

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;
 import '../tracer.dart';
 
@@ skipping 66 matching lines @@
         tag("locals", () {
           printProperty("size", 0);
           printProperty("method", "None");
         });
       });
       tag("HIR", () {
         String formatParameter(cps_ir.Parameter param) {
           return '${names.name(param)} ${param.type}';
         }
         if (entryPoint != null) {
-          String thisParam = entryPoint.thisParameter != null
-              ? formatParameter(entryPoint.thisParameter)
+          String thisParam = entryPoint.receiverParameter != null
+              ? formatParameter(entryPoint.receiverParameter)
               : 'no receiver';
+          String interceptorParam = entryPoint.interceptorParameter != null
+              ? formatParameter(entryPoint.interceptorParameter)
+              : 'no interceptor';
           String params = entryPoint.parameters.map(formatParameter).join(', ');
-          printStmt('x0', 'Entry ($thisParam) ($params)');
+          printStmt('x0', 'Entry ($interceptorParam) ($thisParam) ($params)');
         }
         String params = block.parameters.map(formatParameter).join(', ');
         printStmt('x0', 'Parameters ($params)');
         visit(block.body);
       });
     });
   }
 
   void printStmt(String resultVar, String contents) {
     int bci = 0;
@@ skipping 581 matching lines @@
   }
 
   visitBoundsCheck(cps_ir.BoundsCheck node) {
     unexpectedNode(node);
   }
 
   visitReceiverCheck(cps_ir.ReceiverCheck node) {
     unexpectedNode(node);
   }
 }