Use EmbedderHeapTracer instead of object grouping when trace_embedder_heap flag is set

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index 92487371e32efa8f1caab4e3d6fb3bf8ce1e46ef..61e32cf94db44eb6784a92d09495894bf5f7d161 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -2291,6 +2291,7 @@ class JSObject: public JSReceiver {
   inline Object* GetInternalField(int index);
   inline void SetInternalField(int index, Object* value);
   inline void SetInternalField(int index, Smi* value);
+  bool WasConstructedFromApiFunction();
 
   void CollectOwnPropertyNames(KeyAccumulator* keys,
                                PropertyFilter filter = ALL_PROPERTIES);