Internally, --useOSLog=0 is represented as OSLogType::None. Options::dumpAllOptionsInALine() dumps this value as "none". When "none" is later passed back top Options::setOption(), it is rejected because useOSLog's parse function wasn't expecting "none" as an input string. The fix is to simply add "none" to the list of allowed input strings.
Pull request: https://github.com/WebKit/WebKit/pull/1641
Committed r295677 (251682@main): <https://commits.webkit.org/251682@main>
Reviewed commits have been landed. Closing PR #1641 and removing active labels.