492     , fTail(other.fTail)  in SkDynamicMemoryWStream()
496     other.fTail = nullptr;  in SkDynamicMemoryWStream()
519     fHead = fTail = nullptr;  in reset()
526     if (fTail) {  in bytesWritten()
527         return fBytesWrittenBeforeTail + fTail->written();  in bytesWritten()
537         if (fTail) {  in write()
538             if (fTail->avail() > 0) {  in write()
539                 size = std::min(fTail->avail(), count);  in write()
540                 buffer = fTail->append(buffer, size);  in write()
548             fBytesWrittenBeforeTail += fTail->written();  in write()
558         if (fTail != nullptr) {  in write()
559             fTail->fNext = block;  in write()
561             fHead = fTail = block;  in write()
563         fTail = block;  in write()
579     dst->fTail->fNext = fHead;  in writeToAndReset()
580     dst->fBytesWrittenBeforeTail += fBytesWrittenBeforeTail + dst->fTail->written();  in writeToAndReset()
581     dst->fTail = fTail;  in writeToAndReset()
582     fHead = fTail = nullptr;  in writeToAndReset()
597     fTail->fNext = dst->fHead;  in prependToAndReset()
599     dst->fBytesWrittenBeforeTail += fBytesWrittenBeforeTail + fTail->written();  in prependToAndReset()
600     fHead = fTail = nullptr;  in prependToAndReset()
654     if (fTail) {  in padToAlign4()
656         int padBytes = -(int)fTail->written() & 0x03;  in padToAlign4()
659             fTail->append(&zero, padBytes);  in padToAlign4()
682     fHead = fTail = nullptr;  in copyToAndReset()
699     fHead = fTail = nullptr;  in writeToAndReset()
717         SkASSERT(!fTail);  in validate()
721     SkASSERT(fTail);  in validate()
878     if (fHead == fTail) {  // one block, may be worth shrinking.  in detachAsStream()
879         ptrdiff_t used = fTail->fCurr - (char*)fTail;  in detachAsStream()
880         fHead = fTail = (SkDynamicMemoryWStream::Block*)sk_realloc_throw(fTail, SkToSizeT(used));  in detachAsStream()
881         fTail->fStop = fTail->fCurr = (char*)fTail + used;  // Update pointers.  in detachAsStream()
882         SkASSERT(nullptr == fTail->fNext);  in detachAsStream()