21 struct SkBufferBlock {  struct
22     SkBufferBlock*  fNext;      // updated by the writer  argument
26     SkBufferBlock(size_t capacity) : fNext(nullptr), fUsed(0), fCapacity(capacity) {}  in SkBufferBlock()  function
33     static SkBufferBlock* Alloc(size_t length) {  in Alloc()  argument
35         void* buffer = sk_malloc_throw(sizeof(SkBufferBlock) + capacity);  in Alloc()
36         return new (buffer) SkBufferBlock(capacity);  in Alloc()
62         const size_t minSize = kMinAllocSize - sizeof(SkBufferBlock);  in LengthToCapacity()  argument
69     SkBufferBlock   fBlock;
95             SkBufferBlock* block = fBlock.fNext;  in unref()
98                 SkBufferBlock* next = block->fNext;  in unref()
105     void validate(size_t minUsed, const SkBufferBlock* tail = nullptr) const {  in validate()
109         const SkBufferBlock* block = &fBlock;  in validate()
110         const SkBufferBlock* lastBlock = block;  in validate()
129 SkROBuffer::SkROBuffer(const SkBufferHead* head, size_t available, const SkBufferBlock* tail)  in SkROBuffer()
231         SkBufferBlock* block = SkBufferBlock::Alloc(length + reserve);  in append()