makeUniqueCopy   3114 Source/core/dom/Element.cpp         m_elementData = other.m_elementData->makeUniqueCopy();
makeUniqueCopy   3135 Source/core/dom/Element.cpp         m_elementData = static_cast<ShareableElementData*>(m_elementData.get())->makeUniqueCopy();
makeUniqueCopy    110 Source/core/dom/ElementData.h     PassRefPtr<UniqueElementData> makeUniqueCopy() const;