First step toward resolving generic function types

pkg/analyzer/lib/src/dart/ast/ast.dart

Index: pkg/analyzer/lib/src/dart/ast/ast.dart
diff --git a/pkg/analyzer/lib/src/dart/ast/ast.dart b/pkg/analyzer/lib/src/dart/ast/ast.dart
index d157276a2a9b958e73be3113ce17bf478723b4e6..4fc77fdee8460e6e8b9209cedbfa8ea5e0e06700 100644
--- a/pkg/analyzer/lib/src/dart/ast/ast.dart
+++ b/pkg/analyzer/lib/src/dart/ast/ast.dart
@@ -5699,6 +5699,9 @@ class GenericFunctionTypeImpl extends TypeAnnotationImpl
    */
   FormalParameterList _parameters;
 
+  @override
+  DartType type;
+
   /**
    * Initialize a newly created generic function type.
    */
@@ -5742,9 +5745,6 @@ class GenericFunctionTypeImpl extends TypeAnnotationImpl
     _returnType = _becomeParentOf(type as AstNodeImpl);
   }
 
-  @override
-  DartType get type => null;
-
   /**
    * Return the type parameters for the function type, or `null` if the function
    * type does not have any type parameters.