We should add support for the Mersenne Twister PRNG on platforms that don't use the Standard C library implementation of srand() and rand(). As of 02/01/2011, the Apple Mac; Apple Windows; Brew MP; and UNIX ports do not support the Mersenne Twister PRNG because they use platform-specific alternatives to srand(3) and rand(3).
This bug is invalid as per Patrick Gansterer's comment on bug #53506 <https://bugs.webkit.org/show_bug.cgi?id=53506#c5>.