Support rest parameters in arrow functions

src/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_PARSER_H_
 #define V8_PARSER_H_
 
 #include "src/allocation.h"
 #include "src/ast.h"
 #include "src/compiler.h"  // TODO(titzer): remove this include dependency
@@ skipping 739 matching lines @@
   }
   ZoneList<v8::internal::Statement*>* NewStatementList(int size, Zone* zone) {
     return new(zone) ZoneList<v8::internal::Statement*>(size, zone);
   }
   V8_INLINE Scope* NewScope(Scope* parent_scope, ScopeType scope_type,
                             FunctionKind kind = kNormalFunction);
 
   V8_INLINE void DeclareFormalParameter(Scope* scope, const AstRawString* name,
                                         ExpressionClassifier* classifier,
                                         bool is_rest);
-  void DeclareArrowFunctionParameters(Scope* scope, Expression* expr,
-                                      const Scanner::Location& params_loc,
-                                      Scanner::Location* duplicate_loc,
-                                      bool* ok);
   void ParseArrowFunctionFormalParameters(Scope* scope, Expression* params,
                                           const Scanner::Location& params_loc,
-                                          bool* is_rest,
+                                          bool* has_rest,
                                           Scanner::Location* duplicate_loc,
                                           bool* ok);
 
   // Temporary glue; these functions will move to ParserBase.
   Expression* ParseV8Intrinsic(bool* ok);
   FunctionLiteral* ParseFunctionLiteral(
       const AstRawString* name, Scanner::Location function_name_location,
       bool name_is_strict_reserved, FunctionKind kind,
       int function_token_position, FunctionLiteral::FunctionType type,
       FunctionLiteral::ArityRestriction arity_restriction, bool* ok);
@@ skipping 510 matching lines @@
     var->set_maybe_assigned();
   }
   if (is_duplicate) {
     classifier->RecordDuplicateFormalParameterError(
         parser_->scanner()->location());
   }
 }
 } }  // namespace v8::internal
 
 #endif  // V8_PARSER_H_