VP8EncCodeLayerBlock  933 third_party/libwebp/enc/frame.c       VP8EncCodeLayerBlock(&it);
VP8EncCodeLayerBlock 1005 third_party/libwebp/enc/frame.c         VP8EncCodeLayerBlock(&it);
VP8EncCodeLayerBlock  538 third_party/libwebp/enc/vp8enci.h void VP8EncCodeLayerBlock(VP8EncIterator* it);   // code one more macroblock