[cleanup] Remove dead code from DeclareLookupSlot and rename it

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/zone.h"
 
@@ skipping 101 matching lines @@
   int index() const { return index_; }
   InitializationFlag initialization_flag() const {
     return initialization_flag_;
   }
 
   void AllocateTo(VariableLocation location, int index) {
     location_ = location;
     index_ = index;
   }
 
-  void SetFromEval() { is_from_eval_ = true; }
-
   static int CompareIndex(Variable* const* v, Variable* const* w);
 
-  PropertyAttributes DeclarationPropertyAttributes() const {
-    int property_attributes = NONE;
-    if (IsImmutableVariableMode(mode_)) {
-      property_attributes |= READ_ONLY;
-    }
-    if (is_from_eval_) {
-      property_attributes |= EVAL_DECLARED;
-    }
-    return static_cast<PropertyAttributes>(property_attributes);
-  }
-
  private:
   Scope* scope_;
   const AstRawString* name_;
   VariableMode mode_;
   Kind kind_;
   VariableLocation location_;
   int index_;
   int initializer_position_;
 
   // If this field is set, this variable references the stored locally bound
   // variable, but it might be shadowed by variable bindings introduced by
   // sloppy 'eval' calls between the reference scope (inclusive) and the
   // binding scope (exclusive).
   Variable* local_if_not_shadowed_;
 
-  // True if this variable is introduced by a sloppy eval
-  bool is_from_eval_;
-
   // Usage info.
   bool force_context_allocation_;  // set by variable resolver
   bool is_used_;
   InitializationFlag initialization_flag_;
   MaybeAssignedFlag maybe_assigned_;
 };
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_AST_VARIABLES_H_