Revert "Upgrade to 5.0.71.48"

This reverts commit 8389745919cae02139ddc085a63c00d024269cf2.

Change-Id: Ic5c75c8b3ddaf795972372fbc863a514862953c1
diff --git a/test/mjsunit/compiler/optimized-for-in.js b/test/mjsunit/compiler/optimized-for-in.js
index d93344e..f3ff6be 100644
--- a/test/mjsunit/compiler/optimized-for-in.js
+++ b/test/mjsunit/compiler/optimized-for-in.js
@@ -25,7 +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: --allow-natives-syntax --no-concurrent-osr
+// Flags: --optimize-for-in --allow-natives-syntax
+// Flags: --no-concurrent-osr
 
 // Test for-in support in Crankshaft.  For simplicity this tests assumes certain
 // fixed iteration order for properties and will have to be adjusted if V8