Move NoSideEffectToString to C++

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index a9c2439e61bbf077ad484031025d9fff7d03369e..f81b693c16a8583efcd7443b7bb5c4431e3845b7 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -1194,6 +1194,9 @@ class Object {
   MUST_USE_RESULT static MaybeHandle<String> ToString(Isolate* isolate,
                                                       Handle<Object> input);
 
+  static Handle<String> NoSideEffectsToString(Isolate* isolate,
+                                              Handle<Object> input);
+
   // ES6 section 7.1.14 ToPropertyKey
   MUST_USE_RESULT static MaybeHandle<Object> ToPropertyKey(
       Isolate* isolate, Handle<Object> value);