Inline single test-only call of Scope::LookupThis method

src/scopes.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_SCOPES_H_
 #define V8_SCOPES_H_
 
 #include "src/ast.h"
 #include "src/pending-compilation-error-handler.h"
 #include "src/zone.h"
@@ skipping 368 matching lines @@
   // The language mode of this scope.
   LanguageMode language_mode() const { return language_mode_; }
 
   // The variable corresponding to the 'this' value.
   Variable* receiver() {
     DCHECK(has_this_declaration());
     DCHECK_NOT_NULL(receiver_);
     return receiver_;
   }
 
-  Variable* LookupThis() { return Lookup(ast_value_factory_->this_string()); }
-
   // TODO(wingo): Add a GLOBAL_SCOPE scope type which will lexically allocate
   // "this" (and no other variable) on the native context.  Script scopes then
   // will not have a "this" declaration.
   bool has_this_declaration() const {
     return (is_function_scope() && !is_arrow_scope()) || is_module_scope();
   }
 
   // The variable corresponding to the 'new.target' value.
   Variable* new_target_var() { return new_target_; }
 
@@ skipping 439 matching lines @@
 
   // For tracking which classes are declared consecutively. Needed for strong
   // mode.
   int class_declaration_group_start_;
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_SCOPES_H_