Add typedef AST node boilerplate.

runtime/vm/kernel_binary.h

 // 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.
 
 #ifndef RUNTIME_VM_KERNEL_BINARY_H_
 #define RUNTIME_VM_KERNEL_BINARY_H_
 
 #if !defined(DART_PRECOMPILED_RUNTIME)
 
 #include <map>
@@ skipping 87 matching lines @@
   kContinueSwitchStatement = 72,
   kIfStatement = 73,
   kReturnStatement = 74,
   kTryCatch = 75,
   kTryFinally = 76,
   kYieldStatement = 77,
   kVariableDeclaration = 78,
   kFunctionDeclaration = 79,
   kAsyncForInStatement = 80,
 
+  kTypedefType = 87,
   kVectorType = 88,
   kInvalidType = 90,
   kDynamicType = 91,
   kVoidType = 92,
   kInterfaceType = 93,
   kFunctionType = 94,
   kTypeParameterType = 95,
   kSimpleInterfaceType = 96,
   kSimpleFunctionType = 97,
 
@@ skipping 438 matching lines @@
   Reader* reader_;
   TokenPosition min_;
   TokenPosition max_;
 };
 
 }  // namespace kernel
 }  // namespace dart
 
 #endif  // !defined(DART_PRECOMPILED_RUNTIME)
 #endif  // RUNTIME_VM_KERNEL_BINARY_H_