Remove strong mode support from Scope and Variable

src/ast/ast.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_AST_AST_H_
 #define V8_AST_AST_H_
 
 #include "src/assembler.h"
 #include "src/ast/ast-value-factory.h"
 #include "src/ast/modules.h"
@@ skipping 531 matching lines @@
 
 
 class VariableDeclaration final : public Declaration {
  public:
   DECLARE_NODE_TYPE(VariableDeclaration)
 
   InitializationFlag initialization() const override {
     return mode() == VAR ? kCreatedInitialized : kNeedsInitialization;
   }
 
-  bool is_class_declaration() const { return is_class_declaration_; }
-
-  // VariableDeclarations can be grouped into consecutive declaration
-  // groups. Each VariableDeclaration is associated with the start position of
-  // the group it belongs to. The positions are used for strong mode scope
-  // checks for classes and functions.
-  int declaration_group_start() const { return declaration_group_start_; }
-
  protected:
   VariableDeclaration(Zone* zone, VariableProxy* proxy, VariableMode mode,
-                      Scope* scope, int pos, bool is_class_declaration = false,
-                      int declaration_group_start = -1)
-      : Declaration(zone, proxy, mode, scope, pos),
-        is_class_declaration_(is_class_declaration),
-        declaration_group_start_(declaration_group_start) {}
-
-  bool is_class_declaration_;
-  int declaration_group_start_;
+                      Scope* scope, int pos)
+      : Declaration(zone, proxy, mode, scope, pos) {}
 };
 
 
 class FunctionDeclaration final : public Declaration {
  public:
   DECLARE_NODE_TYPE(FunctionDeclaration)
 
   FunctionLiteral* fun() const { return fun_; }
   void set_fun(FunctionLiteral* f) { fun_ = f; }
   InitializationFlag initialization() const override {
@@ skipping 2479 matching lines @@
 
 class AstNodeFactory final BASE_EMBEDDED {
  public:
   explicit AstNodeFactory(AstValueFactory* ast_value_factory)
       : local_zone_(ast_value_factory->zone()),
         parser_zone_(ast_value_factory->zone()),
         ast_value_factory_(ast_value_factory) {}
 
   AstValueFactory* ast_value_factory() const { return ast_value_factory_; }
 
-  VariableDeclaration* NewVariableDeclaration(
-      VariableProxy* proxy, VariableMode mode, Scope* scope, int pos,
-      bool is_class_declaration = false, int declaration_group_start = -1) {
+  VariableDeclaration* NewVariableDeclaration(VariableProxy* proxy,
+                                              VariableMode mode, Scope* scope,
+                                              int pos) {
     return new (parser_zone_)
-        VariableDeclaration(parser_zone_, proxy, mode, scope, pos,
-                            is_class_declaration, declaration_group_start);
+        VariableDeclaration(parser_zone_, proxy, mode, scope, pos);
   }
 
   FunctionDeclaration* NewFunctionDeclaration(VariableProxy* proxy,
                                               VariableMode mode,
                                               FunctionLiteral* fun,
                                               Scope* scope,
                                               int pos) {
     return new (parser_zone_)
         FunctionDeclaration(parser_zone_, proxy, mode, fun, scope, pos);
   }
@@ skipping 412 matching lines @@
   // the parser-level zone.
   Zone* parser_zone_;
   AstValueFactory* ast_value_factory_;
 };
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_AST_AST_H_