Extract CallStructure from Selector.

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 '../constants/expressions.dart';
 import '../constants/values.dart' show PrimitiveConstantValue;
 import '../dart_types.dart';
 import '../dart2jslib.dart';
@@ skipping 638 matching lines @@
 
   ir.Primitive _buildInvokeDynamic(ir.Primitive receiver,
                                    Selector selector,
                                    List<ir.Primitive> arguments) {
     assert(isOpen);
     return _continueWithExpression(
         (k) => new ir.InvokeMethod(receiver, selector, k, arguments));
   }
 
   ir.Primitive _buildInvokeCall(ir.Primitive target,
-                                 Selector selector,
-                                 List<ir.Definition> arguments) {
-    Selector callSelector = new Selector.callClosure(
-        selector.argumentCount,
-        selector.namedArguments);
+                                Selector selector,
+                                List<ir.Definition> arguments) {
+    Selector callSelector = new Selector.callClosureFrom(selector);
     return _buildInvokeDynamic(target, callSelector, arguments);
   }
 
 
   /// Create a constant literal from [constant].
   ir.Constant buildConstantLiteral(ConstantExpression constant) {
     assert(isOpen);
     return addPrimitive(new ir.Constant(constant));
   }
 
@@ skipping 1864 matching lines @@
 }
 
 /// Synthetic parameter to a JavaScript factory method that takes the type
 /// argument given for the type variable [variable].
 class TypeInformationParameter implements Local {
   final TypeVariableElement variable;
   final ExecutableElement executableContext;
   TypeInformationParameter(this.variable, this.executableContext);
   String get name => variable.name;
 }