PredictionCostCrossColor  915 3rdparty/libwebp/dsp/lossless.c     cur_diff = PredictionCostCrossColor(&accumulated_red_histo[0], &histo[0]);
PredictionCostCrossColor  946 3rdparty/libwebp/dsp/lossless.c           PredictionCostCrossColor(&accumulated_blue_histo[0], &histo[0]);