[turbofan] Remove for-in support from the AstGraphBuilder.

src/compiler/ast-graph-builder.h

 // Copyright 2014 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_COMPILER_AST_GRAPH_BUILDER_H_
 #define V8_COMPILER_AST_GRAPH_BUILDER_H_
 
 #include "src/ast/ast.h"
 #include "src/compiler/compiler-source-position-table.h"
 #include "src/compiler/js-graph.h"
@@ skipping 373 matching lines @@
   void VisitComma(BinaryOperation* expr);
   void VisitLogicalExpression(BinaryOperation* expr);
   void VisitArithmeticExpression(BinaryOperation* expr);
 
   // Dispatched from VisitCompareOperation.
   void VisitLiteralCompareNil(CompareOperation* expr, Expression* sub_expr,
                               Node* nil_value);
   void VisitLiteralCompareTypeof(CompareOperation* expr, Expression* sub_expr,
                                  Handle<String> check);
 
-  // Dispatched from VisitForInStatement.
-  void VisitForInAssignment(Expression* expr, Node* value,
-                            const VectorSlotPair& feedback,
-                            BailoutId bailout_id);
-
   // Dispatched from VisitObjectLiteral.
   void VisitObjectLiteralAccessor(Node* home_object,
                                   ObjectLiteralProperty* property);
 
   DEFINE_AST_VISITOR_SUBCLASS_MEMBERS();
   DISALLOW_COPY_AND_ASSIGN(AstGraphBuilder);
 };
 
 
 // The abstract execution environment for generated code consists of
@@ skipping 176 matching lines @@
  private:
   SourcePositionTable* const source_positions_;
   SourcePosition const start_position_;
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_AST_GRAPH_BUILDER_H_