isDescendantOf 844 Source/core/dom/Node.cpp bool Node::isDescendantOf(const Node *other) const isDescendantOf 291 Source/core/page/FrameTree.cpp bool FrameTree::isDescendantOf(const LocalFrame* ancestor) const isDescendantOf 242 Source/core/rendering/RenderObject.cpp bool RenderObject::isDescendantOf(const RenderObject* obj) const