481     , fTail(other.fTail)  in SkDynamicMemoryWStream()
485     other.fTail = nullptr;  in SkDynamicMemoryWStream()
508     fHead = fTail = nullptr;  in reset()
515     if (fTail) {  in bytesWritten()
516         return fBytesWrittenBeforeTail + fTail->written();  in bytesWritten()
526         if (fTail) {  in write()
527             if (fTail->avail() > 0) {  in write()
528                 size = SkTMin(fTail->avail(), count);  in write()
529                 buffer = fTail->append(buffer, size);  in write()
537             fBytesWrittenBeforeTail += fTail->written();  in write()
547         if (fTail != nullptr) {  in write()
548             fTail->fNext = block;  in write()
550             fHead = fTail = block;  in write()
552         fTail = block;  in write()
568     dst->fTail->fNext = fHead;  in writeToAndReset()
569     dst->fBytesWrittenBeforeTail += fBytesWrittenBeforeTail + dst->fTail->written();  in writeToAndReset()
570     dst->fTail = fTail;  in writeToAndReset()
571     fHead = fTail = nullptr;  in writeToAndReset()
586     fTail->fNext = dst->fHead;  in prependToAndReset()
588     dst->fBytesWrittenBeforeTail += fBytesWrittenBeforeTail + fTail->written();  in prependToAndReset()
589     fHead = fTail = nullptr;  in prependToAndReset()
643     if (fTail) {  in padToAlign4()
645         int padBytes = -(int)fTail->written() & 0x03;  in padToAlign4()
648             fTail->append(&zero, padBytes);  in padToAlign4()
671     fHead = fTail = nullptr;  in copyToAndReset()
688     fHead = fTail = nullptr;  in writeToAndReset()
706         SkASSERT(!fTail);  in validate()
710     SkASSERT(fTail);  in validate()
867     if (fHead == fTail) {  // one block, may be worth shrinking.  in detachAsStream()
868         ptrdiff_t used = fTail->fCurr - (char*)fTail;  in detachAsStream()
869         fHead = fTail = (SkDynamicMemoryWStream::Block*)sk_realloc_throw(fTail, SkToSizeT(used));  in detachAsStream()
870         fTail->fStop = fTail->fCurr = (char*)fTail + used;  // Update pointers.  in detachAsStream()
871         SkASSERT(nullptr == fTail->fNext);  in detachAsStream()