ERROR_THRESHOLD    22 third_party/libwebp/utils/quant_levels.c #define ERROR_THRESHOLD 1e-4    // MSE stopping criterion.
ERROR_THRESHOLD   172 ui/gfx/transform_unittest.cc #define ERROR_THRESHOLD 1e-14
ERROR_THRESHOLD   174 ui/gfx/transform_unittest.cc #define ERROR_THRESHOLD 1e-7