static const char* TransitionTypeName(ui::PageTransition type) {
  int32_t t = type & ~ui::PAGE_TRANSITION_QUALIFIER_MASK;
  switch (t) {
    case ui::PAGE_TRANSITION_LINK:
      return Page::TransitionTypeEnum::Link;
    case ui::PAGE_TRANSITION_TYPED:
      return Page::TransitionTypeEnum::Typed;
    case ui::PAGE_TRANSITION_AUTO_BOOKMARK:
      return Page::TransitionTypeEnum::Auto_bookmark;
    case ui::PAGE_TRANSITION_AUTO_SUBFRAME:
      return Page::TransitionTypeEnum::Auto_subframe;
    case ui::PAGE_TRANSITION_MANUAL_SUBFRAME:
      return Page::TransitionTypeEnum::Manual_subframe;
    case ui::PAGE_TRANSITION_GENERATED:
      return Page::TransitionTypeEnum::Generated;
    case ui::PAGE_TRANSITION_AUTO_TOPLEVEL:
      return Page::TransitionTypeEnum::Auto_toplevel;
    case ui::PAGE_TRANSITION_FORM_SUBMIT:
      return Page::TransitionTypeEnum::Form_submit;
    case ui::PAGE_TRANSITION_RELOAD:
      return Page::TransitionTypeEnum::Reload;
    case ui::PAGE_TRANSITION_KEYWORD:
      return Page::TransitionTypeEnum::Keyword;
    case ui::PAGE_TRANSITION_KEYWORD_GENERATED:
      return Page::TransitionTypeEnum::Keyword_generated;
    default:
      return Page::TransitionTypeEnum::Other;
  }
}

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.