Implement .getCallType

pkg/compiler/lib/src/ssa/builder.dart

 // Copyright (c) 2012, 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.
 
 import 'dart:collection';
 
 import 'package:js_runtime/shared/embedded_names.dart';
 
 import '../closure.dart';
 import '../common.dart';
@@ skipping 4203 matching lines @@
         element.kind != ElementKind.FIELD) {
       inputs.add(invokeInterceptor(receiver));
     }
     inputs.add(receiver);
     inputs.addAll(arguments);
     TypeMask type;
     if (!element.isGetter && selector.isGetter) {
       type = TypeMaskFactory.inferredTypeForMember(
           element, globalInferenceResults);
     } else if (element.isFunction) {
+      MethodElement method = element;
       type = TypeMaskFactory.inferredReturnTypeForElement(
-          element, globalInferenceResults);
+          method, globalInferenceResults);
     } else {
       type = closedWorld.commonMasks.dynamicType;
     }
     HInstruction instruction = new HInvokeSuper(element, currentNonClosureClass,
         selector, inputs, type, sourceInformation,
         isSetter: selector.isSetter || selector.isIndexSet);
     instruction.sideEffects =
         closedWorld.getSideEffectsOfSelector(selector, null);
     return instruction;
   }
@@ skipping 2603 matching lines @@
       this.oldReturnLocal,
       this.oldReturnType,
       this.oldResolvedAst,
       this.oldStack,
       this.oldLocalsHandler,
       this.inTryStatement,
       this.allFunctionsCalledOnce,
       this.oldElementInferenceResults)
       : super(function);
 }