Copier should copy InvokeMethod calling convention

pkg/compiler/lib/src/cps_ir/cps_fragment.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.
 
 library cps_ir.cps_fragment;
 
 import 'cps_ir_nodes.dart';
 import '../constants/values.dart';
 import '../universe/selector.dart' show Selector;
 import '../types/types.dart' show TypeMask;
@@ skipping 117 matching lines @@
     return letPrim(apply);
   }
 
   /// Inserts an invocation and returns a primitive holding the returned value.
   Primitive invokeMethod(Primitive receiver,
       Selector selector,
       TypeMask mask,
       List<Primitive> arguments,
       [CallingConvention callingConvention = CallingConvention.Normal]) {
     InvokeMethod invoke =
-        new InvokeMethod(receiver, selector, mask, arguments, sourceInformation)
-            ..callingConvention = callingConvention;
+        new InvokeMethod(receiver, selector, mask, arguments,
+                         sourceInformation: sourceInformation,
+                         callingConvention: callingConvention);
     return letPrim(invoke);
   }
 
   /// Inserts an invocation and returns a primitive holding the returned value.
   Primitive invokeStatic(FunctionElement target, List<Primitive> arguments) {
     return letPrim(new InvokeStatic(target, new Selector.fromElement(target),
         arguments, sourceInformation));
   }
 
   /// Inserts an invocation to a static function that throws an error.
@@ skipping 206 matching lines @@
   while (prim.firstRef != null) {
     Refinement refine = prim.firstRef.parent;
     destroyRefinementsOfDeadPrimitive(refine);
     LetPrim letPrim = refine.parent;
     InteriorNode parent = letPrim.parent;
     parent.body = letPrim.body;
     letPrim.body.parent = parent;
     prim.firstRef.unlink();
   }
 }