- Add a per-isolate pseudo random number generator to the

runtime/vm/random.h

Index: runtime/vm/random.h
===================================================================
--- runtime/vm/random.h	(revision 0)
+++ runtime/vm/random.h	(revision 0)
@@ -0,0 +1,31 @@
+// Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+#ifndef VM_RANDOM_H_
+#define VM_RANDOM_H_
+
+#include "vm/globals.h"
+#include "vm/allocation.h"
+
+namespace dart {
+
+class Random : public ValueObject {
+ public:
+  Random();
+  ~Random();
+
+  uint32_t NextUInt32();
+
+ private:
+  void NextState();
+
+  uint64_t _state;
+
+  DISALLOW_ALLOCATION();
+  DISALLOW_COPY_AND_ASSIGN(Random);
+};
+
+}  // namespace dart
+
+#endif  // VM_RANDOM_H_