StaticTextDimensionsCallback(FcChar32 aChar, nsFontXft *aFont, void *aData)
StaticTextDimensionsCallback(const FcChar32 *aString, PRUint32 aLen, nsFontXft *aFont, void *aData)
StaticTextDimensionsCallback(FcChar32 aChar, nsFontXft *aFont, void *aData){    TextDimensionsData *data = (TextDimensionsData *)aData;    data->metrics->TextDimensionsCallback(aChar, aFont, aData);}