[stubs] Port ToName stub to TurboFan.

src/interpreter/interpreter.h

Index: src/interpreter/interpreter.h
diff --git a/src/interpreter/interpreter.h b/src/interpreter/interpreter.h
index 1482f55bed57be956aaa2d874be4c1e5dbcdee68..faac5fc663671ae571afdb47c29fa063b74c412b 100644
--- a/src/interpreter/interpreter.h
+++ b/src/interpreter/interpreter.h
@@ -108,6 +108,10 @@ class Interpreter {
   template <class Generator>
   void DoUnaryOpWithFeedback(InterpreterAssembler* assembler);
 
+  // Generates code to perform the conversion operation via |Generator|.
+  template <class Generator>
+  void DoConversionOp(InterpreterAssembler* assembler);
+
   // Generates code to perform the comparison operation associated with
   // |compare_op|.
   void DoCompareOp(Token::Value compare_op, InterpreterAssembler* assembler);