[parser] Clean up ParserBase typedefs

src/parsing/preparser.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_PARSING_PREPARSER_H
 #define V8_PARSING_PREPARSER_H
 
 #include "src/ast/scopes.h"
 #include "src/parsing/parser-base.h"
 
@@ skipping 581 matching lines @@
 class PreParser;
 
 template <>
 struct ParserTypes<PreParser> {
   typedef ParserBase<PreParser> Base;
   typedef PreParser Impl;
 
   // PreParser doesn't need to store generator variables.
   typedef void GeneratorVariable;
 
-  typedef int AstProperties;
-
   // Return types for traversing functions.
   typedef PreParserIdentifier Identifier;
   typedef PreParserExpression Expression;
-  typedef PreParserExpression YieldExpression;
   typedef PreParserExpression FunctionLiteral;
-  typedef PreParserExpression ClassLiteral;
-  typedef PreParserExpression Literal;
   typedef PreParserExpression ObjectLiteralProperty;
   typedef PreParserExpressionList ExpressionList;
   typedef PreParserExpressionList PropertyList;
-  typedef PreParserIdentifier FormalParameter;
   typedef PreParserFormalParameters FormalParameters;
   typedef PreParserStatementList StatementList;
   typedef PreParserStatement Block;
 
   // For constructing objects returned by the traversing functions.
   typedef PreParserFactory Factory;
 };
 
 
 // Preparsing checks a JavaScript program and emits preparse-data that helps
@@ skipping 590 matching lines @@
     function_state_->NextMaterializedLiteralIndex();
     function_state_->NextMaterializedLiteralIndex();
   }
   return EmptyExpression();
 }
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_PARSING_PREPARSER_H