[parser] improve inferred function names for async arrow functions

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 539 matching lines @@
   const AstRawString* GetNumberAsSymbol(Scanner* scanner);
 
   Expression* ThisExpression(int pos);
   Expression* NewSuperPropertyReference(AstNodeFactory* factory, int pos);
   Expression* NewSuperCallReference(AstNodeFactory* factory, int pos);
   Expression* NewTargetExpression(int pos);
   Expression* FunctionSentExpression(AstNodeFactory* factory, int pos);
   Literal* ExpressionFromLiteral(Token::Value token, int pos, Scanner* scanner,
                                  AstNodeFactory* factory);
   Expression* ExpressionFromIdentifier(const AstRawString* name,
-                                       int start_position, int end_position);
+                                       int start_position, int end_position,
+                                       InferName = InferName::Yes);
   Expression* ExpressionFromString(int pos, Scanner* scanner,
                                    AstNodeFactory* factory);
   Expression* GetIterator(Expression* iterable, AstNodeFactory* factory,
                           int pos);
   ZoneList<v8::internal::Expression*>* NewExpressionList(int size, Zone* zone) {
     return new(zone) ZoneList<v8::internal::Expression*>(size, zone);
   }
   ZoneList<ObjectLiteral::Property*>* NewPropertyList(int size, Zone* zone) {
     return new(zone) ZoneList<ObjectLiteral::Property*>(size, zone);
   }
@@ skipping 803 matching lines @@
 
 DoExpression* ParserTraits::ParseDoExpression(bool* ok) {
   return parser_->ParseDoExpression(ok);
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_PARSING_PARSER_H_