{
if (!element->isInTopLayer())
return 0;
- const Vector<RefPtr<Element> >& topLayerElements = element->document().topLayerElements();
+ const WillBeHeapVector<RefPtrWillBeMember<Element> >& topLayerElements = element->document().topLayerElements();
size_t position = topLayerElements.find(element);
ASSERT(position != kNotFound);
for (size_t i = position + 1; i < topLayerElements.size(); ++i) {