Revert "Add typedef AST node boilerplate."

pkg/kernel/lib/binary/ast_to_binary.dart

 // 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.
 library kernel.ast_to_binary;
 
 import '../ast.dart';
 import '../import_table.dart';
 import 'tag.dart';
 import 'dart:convert';
 import 'dart:typed_data';
@@ skipping 233 matching lines @@
   bool insideExternalLibrary = false;
 
   visitLibrary(Library node) {
     insideExternalLibrary = node.isExternal;
     writeByte(insideExternalLibrary ? 1 : 0);
     writeCanonicalNameReference(getCanonicalNameOfLibrary(node));
     writeStringReference(node.name ?? '');
     // TODO(jensj): We save (almost) the same URI twice.
     writeUriReference(node.fileUri ?? '');
     writeDeferredImports(node);
-    writeNodeList(node.typedefs);
     writeNodeList(node.classes);
     writeNodeList(node.fields);
     writeNodeList(node.procedures);
   }
 
   void writeDeferredImports(Library library) {
     _deferredImportIndexer = library.deferredImports.isEmpty
         ? const <DeferredImport, int>{}
         : <DeferredImport, int>{};
     writeUInt30(library.deferredImports.length);
     for (int i = 0; i < library.deferredImports.length; ++i) {
       var importNode = library.deferredImports[i];
       _deferredImportIndexer[importNode] = i;
       writeDeferredImport(importNode);
     }
   }
 
   void writeDeferredImport(DeferredImport node) {
     writeLibraryReference(node.importedLibrary);
     writeStringReference(node.name);
   }
 
-  void visitTypedef(Typedef node) {
-    writeCanonicalNameReference(getCanonicalNameOfTypedef(node));
-    writeOffset(node.fileOffset);
-    writeStringReference(node.name);
-    writeUriReference(node.fileUri ?? '');
-    writeNodeList(node.typeParameters);
-    writeNode(node.type);
-  }
-
   void writeAnnotation(Expression annotation) {
     _variableIndexer ??= new VariableIndexer();
     writeNode(annotation);
   }
 
   void writeAnnotationList(List<Expression> annotations) {
     writeList(annotations, writeAnnotation);
   }
 
   int _encodeClassFlags(bool isAbstract, ClassLevel level) {
@@ skipping 716 matching lines @@
 
   visitTypeParameterType(TypeParameterType node) {
     writeByte(Tag.TypeParameterType);
     writeUInt30(_typeParameterIndexer[node.parameter]);
   }
 
   visitVectorType(VectorType node) {
     writeByte(Tag.VectorType);
   }
 
-  visitTypedefType(TypedefType node) {
-    writeByte(Tag.TypedefType);
-    writeReference(node.typedefReference);
-    writeNodeList(node.typeArguments);
-  }
-
   visitTypeParameter(TypeParameter node) {
     writeStringReference(node.name ?? '');
     writeNode(node.bound);
   }
 
   defaultNode(Node node) {
     throw 'Unsupported node: $node';
   }
 }
 
@@ skipping 311 matching lines @@
   void flush() {
     _sink.add(_buffer.sublist(0, length));
     _buffer = new Uint8List(SIZE);
     length = 0;
   }
 
   void flushAndDestroy() {
     _sink.add(_buffer.sublist(0, length));
   }
 }