Refactor lexical home object binding

src/scopes.cc

Index: src/scopes.cc
diff --git a/src/scopes.cc b/src/scopes.cc
index 9db5745160c1cff2f859936780744b83c8bac44a..63ae7ec1099627c187043ac2cb62e6e4d270f131 100644
--- a/src/scopes.cc
+++ b/src/scopes.cc
@@ -159,7 +159,6 @@ void Scope::SetDefaults(ScopeType scope_type, Scope* outer_scope,
   new_target_ = nullptr;
   function_ = nullptr;
   arguments_ = nullptr;
-  home_object_ = nullptr;
   this_function_ = nullptr;
   illegal_redecl_ = nullptr;
   scope_inside_with_ = false;
@@ -335,15 +334,6 @@ void Scope::Initialize() {
     if (IsConciseMethod(function_kind_) || IsConstructor(function_kind_) ||
         IsAccessorFunction(function_kind_)) {
       DCHECK(!is_arrow_scope());
-      // Declare '.home_object' variable which exists in all methods.
-      // Note that it might never be accessed, in which case it won't be
-      // allocated during variable allocation.
-      variables_.Declare(this, ast_value_factory_->home_object_string(), CONST,
-                         Variable::NORMAL, kCreatedInitialized);
-    }
-
-    if (IsSubclassConstructor(function_kind_)) {
-      DCHECK(!is_arrow_scope());
       variables_.Declare(this, ast_value_factory_->this_function_string(),
                          CONST, Variable::NORMAL, kCreatedInitialized);
     }
@@ -1499,12 +1489,6 @@ void Scope::AllocateNonParameterLocals(Isolate* isolate) {
     AllocateNonParameterLocal(isolate, rest_parameter_);
   }
 
-  Variable* home_object_var =
-      LookupLocal(ast_value_factory_->home_object_string());
-  if (home_object_var != nullptr && MustAllocate(home_object_var)) {
-    home_object_ = home_object_var;
-  }
-
   Variable* new_target_var =
       LookupLocal(ast_value_factory_->new_target_string());
   if (new_target_var != nullptr && MustAllocate(new_target_var)) {