insertNodeBefore  294 Source/core/editing/CompositeEditCommand.cpp void CompositeEditCommand::insertNodeBefore(PassRefPtr<Node> insertChild, PassRefPtr<Node> refChild, ShouldAssumeContentIsAlwaysEditable shouldAssumeContentIsAlwaysEditable)
insertNodeBefore  231 Source/core/editing/ReplaceSelectionCommand.cpp void ReplacementFragment::insertNodeBefore(PassRefPtr<Node> node, Node* refNode)