takeUpgradeCandidatesFor   56 Source/core/dom/custom/CustomElementRegistrationContext.cpp     const CustomElementUpgradeCandidateMap::ElementSet& upgradeCandidates = m_candidates.takeUpgradeCandidatesFor(definition->descriptor());
takeUpgradeCandidatesFor   57 Source/core/dom/custom/CustomElementUpgradeCandidateMap.h     ElementSet takeUpgradeCandidatesFor(const CustomElementDescriptor&);