[turbofan] Add checked load/store operators.

test/unittests/test-utils.cc

Index: test/unittests/test-utils.cc
diff --git a/test/unittests/test-utils.cc b/test/unittests/test-utils.cc
index b2284990c4c3a6b4bc35f20b333474be1f46d221..31d724ab6888a8f241da0fe9d276d387d48188b9 100644
--- a/test/unittests/test-utils.cc
+++ b/test/unittests/test-utils.cc
@@ -98,6 +98,11 @@ TestWithIsolate::~TestWithIsolate() {}
 Factory* TestWithIsolate::factory() const { return isolate()->factory(); }
 
 
+base::RandomNumberGenerator* TestWithIsolate::random_number_generator() const {
+  return isolate()->random_number_generator();
+}
+
+
 TestWithZone::~TestWithZone() {}
 
 }  // namespace internal