Add optional types to function/method declarations

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 588 matching lines @@
   V8_INLINE DoExpression* ParseDoExpression(bool* ok);
 
   void ReindexLiterals(const ParserFormalParameters& parameters);
 
   // Temporary glue; these functions will move to ParserBase.
   Expression* ParseV8Intrinsic(bool* ok);
   FunctionLiteral* ParseFunctionLiteral(
       const AstRawString* name, Scanner::Location function_name_location,
       FunctionNameValidity function_name_validity, FunctionKind kind,
       int function_token_position, FunctionLiteral::FunctionType type,
-      LanguageMode language_mode, bool* ok);
+      LanguageMode language_mode, typesystem::TypeFlags type_flags, bool* ok);
   V8_INLINE void SkipLazyFunctionBody(
       int* materialized_literal_count, int* expected_property_count, bool* ok,
       Scanner::BookmarkScope* bookmark = nullptr);
   V8_INLINE ZoneList<Statement*>* ParseEagerFunctionBody(
       const AstRawString* name, int pos,
       const ParserFormalParameters& parameters, FunctionKind kind,
       FunctionLiteral::FunctionType function_type, bool* ok);
 
   ClassLiteral* ParseClassLiteral(const AstRawString* name,
                                   Scanner::Location class_name_location,
@@ skipping 370 matching lines @@
       Scope* inner_scope, VariableMode mode,
       ZoneList<const AstRawString*>* names, ForStatement* loop, Statement* init,
       Expression* cond, Statement* next, Statement* body, bool* ok);
 
   void RewriteDoExpression(Expression* expr, bool* ok);
 
   FunctionLiteral* ParseFunctionLiteral(
       const AstRawString* name, Scanner::Location function_name_location,
       FunctionNameValidity function_name_validity, FunctionKind kind,
       int function_token_position, FunctionLiteral::FunctionType type,
-      LanguageMode language_mode, bool* ok);
+      LanguageMode language_mode, typesystem::TypeFlags type_flags, bool* ok);
 
 
   ClassLiteral* ParseClassLiteral(const AstRawString* name,
                                   Scanner::Location class_name_location,
                                   bool name_is_strict_reserved, int pos,
                                   bool* ok);
 
   // Magical syntax support.
   Expression* ParseV8Intrinsic(bool* ok);
 
@@ skipping 309 matching lines @@
 
 DoExpression* ParserTraits::ParseDoExpression(bool* ok) {
   return parser_->ParseDoExpression(ok);
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_PARSING_PARSER_H_