Copier should copy InvokeMethod calling convention

pkg/compiler/lib/src/cps_ir/cps_ir_builder.dart

 // Copyright (c) 2013, 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_builder;
 
 import '../closure.dart' hide ClosureScope;
 import '../common.dart';
 import '../common/names.dart' show
     Names,
@@ skipping 663 matching lines @@
         buildThis(), target, selector, arguments, sourceInformation));
   }
 
   ir.Primitive _buildInvokeDynamic(ir.Primitive receiver,
                                    Selector selector,
                                    TypeMask mask,
                                    List<ir.Primitive> arguments,
                                    SourceInformation sourceInformation) {
     assert(isOpen);
     return addPrimitive(new ir.InvokeMethod(
-        receiver, selector, mask, arguments, sourceInformation));
+        receiver, selector, mask, arguments,
+        sourceInformation: sourceInformation));
   }
 
   ir.Primitive _buildInvokeCall(ir.Primitive target,
                                 CallStructure callStructure,
                                 TypeMask mask,
                                 List<ir.Definition> arguments,
                                 {SourceInformation sourceInformation}) {
     Selector selector = callStructure.callSelector;
     return _buildInvokeDynamic(
         target, selector, mask, arguments, sourceInformation);
@@ skipping 2221 matching lines @@
 }
 
 class SwitchCaseInfo {
   final List<ir.Primitive> constants = <ir.Primitive>[];
   final SubbuildFunction buildBody;
 
   SwitchCaseInfo(this.buildBody);
 
   void addConstant(ir.Primitive constant) => constants.add(constant);
 }