RenderFrameHostManager::RenderFrameHostManager(
    FrameTreeNode* frame_tree_node,
    RenderFrameHostDelegate* render_frame_delegate,
    RenderWidgetHostDelegate* render_widget_delegate,
    Delegate* delegate)
    : frame_tree_node_(frame_tree_node),
      delegate_(delegate),
      render_frame_delegate_(render_frame_delegate),
      render_widget_delegate_(render_widget_delegate),
      weak_factory_(this) {
  DCHECK(frame_tree_node_);
}

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.