Revert of [runtime] Remove useless IN builtin.

test/unittests/compiler/js-intrinsic-lowering-unittest.cc

Index: test/unittests/compiler/js-intrinsic-lowering-unittest.cc
diff --git a/test/unittests/compiler/js-intrinsic-lowering-unittest.cc b/test/unittests/compiler/js-intrinsic-lowering-unittest.cc
index 99f45749608eadd5b040d273b15bd53ff8c551c8..92be4e43e0b129c3afaf713407004cc969baf1e8 100644
--- a/test/unittests/compiler/js-intrinsic-lowering-unittest.cc
+++ b/test/unittests/compiler/js-intrinsic-lowering-unittest.cc
@@ -122,6 +122,23 @@
                        input, context, effect, control));
   ASSERT_TRUE(r.Changed());
   EXPECT_THAT(r.replacement(), IsObjectIsSmi(input));
+}
+
+
+// -----------------------------------------------------------------------------
+// %_IsNonNegativeSmi
+
+
+TEST_F(JSIntrinsicLoweringTest, InlineIsNonNegativeSmi) {
+  Node* const input = Parameter(0);
+  Node* const context = Parameter(1);
+  Node* const effect = graph()->start();
+  Node* const control = graph()->start();
+  Reduction const r = Reduce(graph()->NewNode(
+      javascript()->CallRuntime(Runtime::kInlineIsNonNegativeSmi, 1), input,
+      context, effect, control));
+  ASSERT_TRUE(r.Changed());
+  EXPECT_THAT(r.replacement(), IsObjectIsNonNegativeSmi(input));
 }