Track heap objects.

src/objects-inl.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 3590 matching lines @@
 bool Map::CanBeDeprecated() {
   int descriptor = LastAdded();
   for (int i = 0; i <= descriptor; i++) {
     PropertyDetails details = instance_descriptors()->GetDetails(i);
     if (FLAG_track_fields && details.representation().IsSmi()) {
       return true;
     }
     if (FLAG_track_double_fields && details.representation().IsDouble()) {
       return true;
     }
+    if (FLAG_track_heap_object_fields &&
+        details.representation().IsHeapObject()) {
+      return true;
+    }
   }
   return false;
 }
 
 
 Handle<Map> Map::CurrentMapForDeprecated(Handle<Map> map) {
   if (!map->is_deprecated()) return map;
   return GeneralizeRepresentation(map, 0, Representation::Smi());
 }
 
@@ skipping 2593 matching lines @@
 #undef WRITE_UINT32_FIELD
 #undef READ_SHORT_FIELD
 #undef WRITE_SHORT_FIELD
 #undef READ_BYTE_FIELD
 #undef WRITE_BYTE_FIELD
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_INL_H_