rem: HintReplacementDetector::HintReplacementDetector(Type1SubrRemover *remover) : Type1Interp(remover->program(), 0), _remover(remover)
add: HintReplacementDetector::HintReplacementDetector(Type1Font *f, Vector<double> *wv, int b) : Type1Interp(f, wv), _hint_replacements(f->nsubrs(), 0), _call_counts(f->nsubrs(), 0), _count_calls_below(b)
context: HintReplacementDetector::HintReplacementDetector(Type1SubrRemover *remover)  : Type1Interp(remover->program(), 0), _remover(remover){}