Revert "Add typedef AST node boilerplate."

runtime/vm/kernel.cc

 // Copyright (c) 2016, 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.
 
 #include "vm/kernel.h"
 
 #if !defined(DART_PRECOMPILED_RUNTIME)
 namespace dart {
 
 namespace kernel {
@@ skipping 66 matching lines @@
 }
 
 
 void Library::VisitChildren(Visitor* visitor) {
   VisitList(&classes(), visitor);
   VisitList(&procedures(), visitor);
   VisitList(&fields(), visitor);
 }
 
 
-Typedef::~Typedef() {}
-
-
-void Typedef::AcceptTreeVisitor(TreeVisitor* visitor) {
-  visitor->VisitTypedef(this);
-}
-
-
-void Typedef::VisitChildren(Visitor* visitor) {
-  VisitList(&type_parameters(), visitor);
-  type()->AcceptDartTypeVisitor(visitor);
-}
-
-
 Class::~Class() {}
 
 
 void Class::AcceptTreeVisitor(TreeVisitor* visitor) {
   AcceptClassVisitor(visitor);
 }
 
 
 NormalClass::~NormalClass() {}
 
@@ skipping 1088 matching lines @@
 void InterfaceType::AcceptDartTypeVisitor(DartTypeVisitor* visitor) {
   visitor->VisitInterfaceType(this);
 }
 
 
 void InterfaceType::VisitChildren(Visitor* visitor) {
   VisitList(&type_arguments(), visitor);
 }
 
 
-TypedefType::~TypedefType() {}
-
-
-void TypedefType::AcceptDartTypeVisitor(DartTypeVisitor* visitor) {
-  visitor->VisitTypedefType(this);
-}
-
-
-void TypedefType::VisitChildren(Visitor* visitor) {
-  VisitList(&type_arguments(), visitor);
-}
-
-
 FunctionType::~FunctionType() {}
 
 
 void FunctionType::AcceptDartTypeVisitor(DartTypeVisitor* visitor) {
   visitor->VisitFunctionType(this);
 }
 
 
 void FunctionType::VisitChildren(Visitor* visitor) {
   VisitList(&type_parameters(), visitor);
@@ skipping 57 matching lines @@
 
 void Program::VisitChildren(Visitor* visitor) {
   VisitList(&libraries(), visitor);
 }
 
 
 }  // namespace kernel
 
 }  // namespace dart
 #endif  // !defined(DART_PRECOMPILED_RUNTIME)