[compiler] Decouple ToObject from CreateWithContext.

src/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_H_
 #define V8_AST_H_
 
 #include "src/assembler.h"
 #include "src/ast-value-factory.h"
 #include "src/bailout-reason.h"
@@ skipping 989 matching lines @@
 class WithStatement final : public Statement {
  public:
   DECLARE_NODE_TYPE(WithStatement)
 
   Scope* scope() { return scope_; }
   Expression* expression() const { return expression_; }
   Statement* statement() const { return statement_; }
   void set_statement(Statement* s) { statement_ = s; }
 
   void set_base_id(int id) { base_id_ = id; }
-  static int num_ids() { return parent_num_ids() + 1; }
-  BailoutId EntryId() const { return BailoutId(local_id(0)); }
+  static int num_ids() { return parent_num_ids() + 2; }
+  BailoutId ToObjectId() const { return BailoutId(local_id(0)); }
+  BailoutId EntryId() const { return BailoutId(local_id(1)); }
 
  protected:
   WithStatement(Zone* zone, Scope* scope, Expression* expression,
                 Statement* statement, int pos)
       : Statement(zone, pos),
         scope_(scope),
         expression_(expression),
         statement_(statement),
         base_id_(BailoutId::None().ToInt()) {}
   static int parent_num_ids() { return 0; }
@@ skipping 2644 matching lines @@
   // the parser-level zone.
   Zone* parser_zone_;
   AstValueFactory* ast_value_factory_;
 };
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_AST_H_