RD_OPT_BASIC      800 third_party/libwebp/enc/frame.c       (method >= 3 || do_search) ? RD_OPT_BASIC : RD_OPT_NONE;
RD_OPT_BASIC      974 third_party/libwebp/enc/frame.c   assert(rd_opt >= RD_OPT_BASIC);   // otherwise, token-buffer won't be useful
RD_OPT_BASIC      124 third_party/libwebp/enc/webpenc.c                      : (method >= 3) ? RD_OPT_BASIC
RD_OPT_BASIC      135 third_party/libwebp/enc/webpenc.c     enc->use_tokens_ = (enc->rd_opt_level_ >= RD_OPT_BASIC);  // need rd stats