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

test/cctest/test-random.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 78 matching lines @@
   Handle<JSFunction> fun(JSFunction::cast(fun_object->ToObjectChecked()));
 
   // Optimize function.
   Execution::Call(isolate, fun, global, 0, NULL, &has_pending_exception);
   Execution::Call(isolate, fun, global, 0, NULL, &has_pending_exception);
   if (!fun->IsOptimized()) fun->MarkForLazyRecompilation();
 
   // Test with some random values.
   TestSeeds(fun, context, 0xC0C0AFFE, 0x31415926);
   TestSeeds(fun, context, 0x01020304, 0xFFFFFFFF);
-  TestSeeds(fun, context, 0x00000001, 0x00000000);
-
-  // Test that we bail out to runtime when seeds are uninitialized (zeros).
-  SetSeeds(seeds, 0, 0);
-  Handle<Object> value =
-      Execution::Call(isolate, fun, global, 0, NULL, &has_pending_exception);
-  CHECK(value->IsHeapNumber());
-  CHECK(fun->IsOptimized());
-  double crankshaft_value = HeapNumber::cast(*value)->value();
-  CHECK_NE(0.0, crankshaft_value);
+  TestSeeds(fun, context, 0x00000001, 0x00000001);
 }