It's going to be removed from Chromium, see https://crbug.com/812523.

/cc @electron/code-owners 
shell/browser/api/electron_api_app.cc
JumpListItem::Type val) {
    std::string item_type;
    switch (val) {
      case JumpListItem::Type::TASK:
        item_type = "task";
        break;
      case JumpListItem::Type::SEPARATOR:
        item_type = "separator";
        break;
      case JumpListItem::Type::FILE:
        item_type = "file";
        break;
    }
    return gin::ConvertToV8(isolate, item_type);
  }
};
template <>
struct Converter<JumpListItem> {
  static bool FromV8(v8::Isolate* isolate,