Use EmbedderHeapTracer instead of object grouping when trace_embedder_heap flag is set

src/api-natives.cc

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/api-natives.h"
 
 #include "src/api.h"
 #include "src/isolate-inl.h"
 #include "src/lookup.h"
 #include "src/messages.h"
@@ skipping 527 matching lines @@
 
     // TODO(svenpanne) Kill ApiInstanceType and refactor things by generalizing
     // JSObject::GetHeaderSize.
     int instance_size = kPointerSize * internal_field_count;
     InstanceType type;
     switch (instance_type) {
       case JavaScriptObjectType:
         if (!obj->needs_access_check() &&
             obj->named_property_handler()->IsUndefined() &&
             obj->indexed_property_handler()->IsUndefined()) {
-          type = JS_OBJECT_TYPE;
+          type = JS_API_OBJECT_TYPE;
         } else {
           type = JS_SPECIAL_API_OBJECT_TYPE;
         }
         instance_size += JSObject::kHeaderSize;
         break;
       case GlobalObjectType:
         type = JS_GLOBAL_OBJECT_TYPE;
         instance_size += JSGlobalObject::kSize;
         break;
       case GlobalProxyType:
@@ skipping 65 matching lines @@
     map->set_is_callable();
     map->set_is_constructor(true);
   }
 
   DCHECK(result->shared()->IsApiFunction());
   return result;
 }
 
 }  // namespace internal
 }  // namespace v8