Automatic update from web-platform-testsMagic constants are replaced by blob.size (Resolves #2634) * Removes magic constants wpt-commits: bb60bf3bde10617a5e533ea97bd06cb699c4257a wpt-pr: 9735 wpt-commits: bb60bf3bde10617a5e533ea97bd06cb699c4257a wpt-pr: 9735