Use type variables on Typedef correctly.

pkg/front_end/lib/src/fasta/builder/function_type_alias_builder.dart

Index: pkg/front_end/lib/src/fasta/builder/function_type_alias_builder.dart
diff --git a/pkg/front_end/lib/src/fasta/builder/function_type_alias_builder.dart b/pkg/front_end/lib/src/fasta/builder/function_type_alias_builder.dart
index 1f533949d0a449c3de1b8dfbb883312df0e7c51e..347d2089578fb2e4abfadc695db9bee239f5ad54 100644
--- a/pkg/front_end/lib/src/fasta/builder/function_type_alias_builder.dart
+++ b/pkg/front_end/lib/src/fasta/builder/function_type_alias_builder.dart
@@ -6,7 +6,6 @@ library fasta.function_type_alias_builder;
 
 import 'builder.dart'
     show
-        FormalParameterBuilder,
         LibraryBuilder,
         MetadataBuilder,
         TypeBuilder,
@@ -15,20 +14,12 @@ import 'builder.dart'
 
 abstract class FunctionTypeAliasBuilder<T extends TypeBuilder, R>
     extends TypeDeclarationBuilder<T, R> {
-  final T returnType;
+  final T type;
 
   final List<TypeVariableBuilder> typeVariables;
 
-  final List<FormalParameterBuilder> formals;
-
-  FunctionTypeAliasBuilder(
-      List<MetadataBuilder> metadata,
-      this.returnType,
-      String name,
-      this.typeVariables,
-      this.formals,
-      LibraryBuilder parent,
-      int charOffset)
+  FunctionTypeAliasBuilder(List<MetadataBuilder> metadata, String name,
+      this.typeVariables, this.type, LibraryBuilder parent, int charOffset)
       : super(metadata, null, name, parent, charOffset);
 
   String get debugName => "FunctionTypeAliasBuilder";