Create a new element for generic function types

pkg/analyzer/lib/src/dart/element/type.dart

Index: pkg/analyzer/lib/src/dart/element/type.dart
diff --git a/pkg/analyzer/lib/src/dart/element/type.dart b/pkg/analyzer/lib/src/dart/element/type.dart
index 9dc98451a0c97b1811b4bf18fb3493231e069f6c..1cfdbf8d15b30aee62cbbe56cb56e53a8437e83d 100644
--- a/pkg/analyzer/lib/src/dart/element/type.dart
+++ b/pkg/analyzer/lib/src/dart/element/type.dart
@@ -386,7 +386,7 @@ class FunctionTypeImpl extends TypeImpl implements FunctionType {
    * [element], and also initialize [typeArguments] to match the
    * [typeParameters], which permits later substitution.
    */
-  FunctionTypeImpl(ExecutableElement element,
+  FunctionTypeImpl(FunctionTypedElement element,
       [List<FunctionTypeAliasElement> prunedTypedefs])
       : this._(element, null, prunedTypedefs, null, null, null, null, false);
 
@@ -425,7 +425,7 @@ class FunctionTypeImpl extends TypeImpl implements FunctionType {
    * Private constructor.
    */
   FunctionTypeImpl._(
-      TypeParameterizedElement element,
+      FunctionTypedElement element,
       String name,
       this.prunedTypedefs,
       this._typeArguments,