More than enough. Chromium takes only 128 bits from /dev/urandom to seed a V8 isolate. You can also use a fixed seed like Googlebot by passing the command line

More than enough. Chromium takes only 128 bits from /dev/urandom to seed a V8 isolate. You can also use a fixed seed like Googlebot by passing the command line flag --js-flags="--random_seed=12345" to Chromium.