Ship for-in initializer deprecation

test/mjsunit/for-in.js

Index: test/mjsunit/for-in.js
diff --git a/test/mjsunit/for-in.js b/test/mjsunit/for-in.js
index bece37a3ee35ea8630400812670d67f703c722ac..547c748dffddd36693a5057b35038e496f6f96ea 100644
--- a/test/mjsunit/for-in.js
+++ b/test/mjsunit/for-in.js
@@ -25,6 +25,8 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
+// Flags: --noharmony-for-in
+
 function props(x) {
   var array = [];
   for (var p in x) array.push(p);