nextSelectableListIndex  587 Source/core/html/HTMLSelectElement.cpp     setActiveSelectionAnchorIndex(nextSelectableListIndex(-1));
nextSelectableListIndex  872 Source/core/html/HTMLSelectElement.cpp         selectOption(nextSelectableListIndex(-1));
nextSelectableListIndex 1421 Source/core/html/HTMLSelectElement.cpp                     endIndex = nextSelectableListIndex(startIndex);
nextSelectableListIndex 1435 Source/core/html/HTMLSelectElement.cpp                 endIndex = nextSelectableListIndex(m_activeSelectionEndIndex);
nextSelectableListIndex  184 Source/core/html/HTMLSelectElement.h     int nextSelectableListIndex(int startIndex) const;