Copier should copy InvokeMethod calling convention

tests/compiler/dart2js/js_backend_cps_ir_operators2_test.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.
 
 // Tests of operators.
 
 library operators_tests;
 
 import 'js_backend_cps_ir.dart';
 
@@ skipping 56 matching lines @@
 }"""),
 
   const TestEntry.forMethod('function(foo)',
       r"""
 foo(a) => a ~/ 13;
 main() {
   print(foo(5));
   print(foo(-100));
 }""", r"""
 function(a) {
-  var v0;
-  return (a | 0) === a && (13 | 0) === 13 ? a / 13 | 0 : J.getInterceptor$n(v0 = a / 13).toInt$0(v0);
+  return (a | 0) === a && (13 | 0) === 13 ? a / 13 | 0 : J.toInt$0$n(a / 13);
 }"""),
 
   const TestEntry(r"""
 foo(a) => a ~/ 13;
 main() {
   print(foo(5));
   print(foo(100));
 }""", r"""
 function() {
   P.print(5 / 13 | 0);
   P.print(100 / 13 | 0);
 }"""),
 
   const TestEntry.forMethod('function(foo)',
       r"""
 foo(a) => a ~/ 13;
 main() {
   print(foo(5));
   print(foo(8000000000));
 }""", r"""
 function(a) {
-  var v0;
-  return (a | 0) === a && (13 | 0) === 13 ? a / 13 | 0 : J.getInterceptor$n(v0 = a / 13).toInt$0(v0);
+  return (a | 0) === a && (13 | 0) === 13 ? a / 13 | 0 : J.toInt$0$n(a / 13);
 }"""),
 
 ];
 
 void main() {
   runTests(tests);
 }