Introduce a RandonNumberGenerator class. Refactor the random/private_random uses in Isolate/Context.

src/platform-openbsd.cc

Index: src/platform-openbsd.cc
diff --git a/src/platform-openbsd.cc b/src/platform-openbsd.cc
index eb48373f39e7535fd27b7e3cfc6b41ac2ba2699a..faf9ba33a5fd749f1a21468adc39501797026c09 100644
--- a/src/platform-openbsd.cc
+++ b/src/platform-openbsd.cc
@@ -397,12 +397,4 @@ bool VirtualMemory::HasLazyCommits() {
   return false;
 }
 
-
-void OS::SetUp() {
-  // Seed the random number generator. We preserve microsecond resolution.
-  uint64_t seed = static_cast<uint64_t>(TimeCurrentMillis()) ^ (getpid() << 16);
-  srandom(static_cast<unsigned int>(seed));
-}
-
-
 } }  // namespace v8::internal