void RenderViewImpl::didActivateCompositor(int input_handler_identifier) {
#if !defined(OS_MACOSX)  // many events are unhandled - http://crbug.com/138003
#if !defined(OS_WIN)  // http://crbug.com/160122
  InputHandlerManager* input_handler_manager =
      RenderThreadImpl::current()->input_handler_manager();
  if (input_handler_manager)
    input_handler_manager->AddInputHandler(
        routing_id_, input_handler_identifier, AsWeakPtr());
#endif
#endif

  RenderWidget::didActivateCompositor(input_handler_identifier);
}

This category addresses vulnerabilities caused by flawed access control mechanisms, where incorrect permission settings allow unauthorized users to access restricted resources.