Implement type variables on old style function-typed formal parameters.

pkg/analyzer/lib/src/summary/fasta/summary_builder.dart

 // Copyright (c) 2017, 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.
 
 /// Logic to build unlinked summaries.
 library summary.src.summary_builder;
 
 import 'package:front_end/src/fasta/parser.dart'
     show
         ClassMemberParser,
@@ skipping 1055 matching lines @@
     topScope.unit.typedefs.add(new UnlinkedTypedefBuilder(
         name: name,
         typeParameters: typeVariables,
         returnType: returnType,
         parameters: formals,
         annotations: metadata));
 
     _addNameIfPublic(name, ReferenceKind.typedef, typeVariables.length);
   }
 
-  void endFunctionTypedFormalParameter(
-      Token thisKeyword, FormalParameterType kind) {
+  void endFunctionTypedFormalParameter() {
     debugEvent("FunctionTypedFormalParameter");
     List<UnlinkedParamBuilder> formals = pop();
     if (formals != null) formals.forEach((p) => p.inheritsCovariantSlot = null);
 
-    /* List typeVariables = */ pop();
     String name = pop();
     EntityRef returnType = pop();
+    /* List typeVariables = */ pop();
     /* int modifiers = */ pop();
     List metadata = pop();
 
     push(new UnlinkedParamBuilder(
         name: name,
         kind: _nextParamKind,
         isFunctionTyped: true,
         parameters: formals,
         annotations: metadata,
         type: returnType));
@@ skipping 465 matching lines @@
 }
 
 /// Internal representation of an initialized name.
 class _InitializedName {
   final String name;
   final UnlinkedExecutableBuilder initializer;
   _InitializedName(this.name, this.initializer);
 
   toString() => "II:" + (initializer != null ? "$name = $initializer" : name);
 }