cleanup check for compatible receiver of api callback

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index 5658c8f0acef3e8d676aa30aee750984ee21f31b..f5458fb676bdf801f1ffb292d4e42e1928403d6a 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -10639,6 +10639,10 @@ class FunctionTemplateInfo: public TemplateInfo {
   bool IsTemplateFor(Object* object);
   bool IsTemplateFor(Map* map);
 
+  // Returns the holder JSObject if the function can legally be called with this
+  // receiver.  Returns Heap::null_value() if the call is illegal.
+  Object* GetCompatibleReceiver(Isolate* isolate, Object* receiver);
+
  private:
   // Bit position in the flag, from least significant bit position.
   static const int kHiddenPrototypeBit   = 0;