detectSignAndGetDigitRange() and matchedDecimalSymbolIndex() are implemented in PlatformLocale, not LocaleICU.
They were moved out from LocaleICU to NumberLocalizer in r124459 (2012), which has then been renamed as Localizer, then Locale, and finally PlatformLocale.
Created attachment 271827 [details]
Comment on attachment 271827 [details]
Clearing flags on attachment: 271827
Committed r196860: <http://trac.webkit.org/changeset/196860>
All reviewed patches have been landed. Closing bug.