Preparse lazy function parameters

src/ast/variables.h

 // Copyright 2011 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_AST_VARIABLES_H_
 #define V8_AST_VARIABLES_H_
 
 #include "src/ast/ast-value-factory.h"
 #include "src/globals.h"
 #include "src/zone/zone.h"
@@ skipping 137 matching lines @@
       : public BitField16<bool, LocationField::kNext, 1> {};
   class IsUsedField
       : public BitField16<bool, ForceContextAllocationField::kNext, 1> {};
   class InitializationFlagField
       : public BitField16<InitializationFlag, IsUsedField::kNext, 2> {};
   class MaybeAssignedFlagField
       : public BitField16<MaybeAssignedFlag, InitializationFlagField::kNext,
                           2> {};
   Variable** next() { return &next_; }
   friend List;
-  // To reset next to nullptr upon resetting after preparsing.
-  // TODO(verwaest): Remove once we properly preparse parameters.
-  friend class DeclarationScope;
 };
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_AST_VARIABLES_H_