[Interpreter] Use existing type conversion stubs.

src/interpreter/interpreter.h

Index: src/interpreter/interpreter.h
diff --git a/src/interpreter/interpreter.h b/src/interpreter/interpreter.h
index e02e9142b3a5522557c832a12f7ea88f48c772c9..43f9ca641ed63fb12eaa6864ba8e5f83bd4235c0 100644
--- a/src/interpreter/interpreter.h
+++ b/src/interpreter/interpreter.h
@@ -103,9 +103,12 @@ class Interpreter {
   // Generates code to perform a JS runtime call.
   void DoCallJSRuntimeCommon(InterpreterAssembler* assembler);
 
-  // Generates code to perform a constructor call..
+  // Generates code to perform a constructor call.
   void DoCallConstruct(InterpreterAssembler* assembler);
 
+  // Generates code to perform a type conversion.
+  void DoTypeConversionOp(Callable callable, InterpreterAssembler* assembler);
+
   // Generates code ro create a literal via |function_id|.
   void DoCreateLiteral(Runtime::FunctionId function_id,
                        InterpreterAssembler* assembler);