[cleanup] Remove redundant fields from DeclarationDescriptor

src/parsing/parser.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_PARSER_H_
 #define V8_PARSING_PARSER_H_
 
 #include "src/allocation.h"
 #include "src/ast/ast.h"
 #include "src/ast/scopes.h"
@@ skipping 937 matching lines @@
   ScriptCompiler::CompileOptions compile_options() const {
     return compile_options_;
   }
   bool consume_cached_parse_data() const {
     return compile_options_ == ScriptCompiler::kConsumeParserCache &&
            cached_parse_data_ != NULL;
   }
   bool produce_cached_parse_data() const {
     return compile_options_ == ScriptCompiler::kProduceParserCache;
   }
-  Scope* DeclarationScope(VariableMode mode) {
-    return IsLexicalVariableMode(mode)
-        ? scope_ : scope_->DeclarationScope();
-  }
 
   // All ParseXXX functions take as the last argument an *ok parameter
   // which is set to false if parsing failed; it is unchanged otherwise.
   // By making the 'exception handling' explicit, we are forced to check
   // for failure at the call sites.
   void* ParseStatementList(ZoneList<Statement*>* body, int end_token, bool* ok);
   Statement* ParseStatementListItem(bool* ok);
   void* ParseModuleItemList(ZoneList<Statement*>* body, bool* ok);
   Statement* ParseModuleItem(bool* ok);
   const AstRawString* ParseModuleSpecifier(bool* ok);
@@ skipping 16 matching lines @@
   Statement* ParseNativeDeclaration(bool* ok);
   Block* ParseBlock(ZoneList<const AstRawString*>* labels, bool* ok);
   Block* ParseVariableStatement(VariableDeclarationContext var_context,
                                 ZoneList<const AstRawString*>* names,
                                 bool* ok);
   DoExpression* ParseDoExpression(bool* ok);
 
   struct DeclarationDescriptor {
     enum Kind { NORMAL, PARAMETER };
     Parser* parser;
-    Scope* declaration_scope;
     Scope* scope;
     Scope* hoist_scope;
     VariableMode mode;
-    bool is_const;
     bool needs_init;
     int declaration_pos;
     int initialization_pos;
     Kind declaration_kind;
   };
 
   struct DeclarationParsingResult {
     struct Declaration {
       Declaration(Expression* pattern, int initializer_position,
                   Expression* initializer)
@@ skipping 390 matching lines @@
 
 DoExpression* ParserTraits::ParseDoExpression(bool* ok) {
   return parser_->ParseDoExpression(ok);
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_PARSING_PARSER_H_