StartPolicy        50 Source/core/dom/shadow/ComposedTreeWalker.h     ComposedTreeWalker(const Node*, StartPolicy = CannotStartFromShadowBoundary);
StartPolicy       115 Source/core/dom/shadow/ComposedTreeWalker.h inline ComposedTreeWalker::ComposedTreeWalker(const Node* node, StartPolicy startPolicy)