Revert "Upgrade to 5.0.71.48"

This reverts commit 8389745919cae02139ddc085a63c00d024269cf2.

Change-Id: Ic5c75c8b3ddaf795972372fbc863a514862953c1
diff --git a/test/mjsunit/harmony/reflect-construct.js b/test/mjsunit/harmony/reflect-construct.js
index c136957..f2dfc15 100644
--- a/test/mjsunit/harmony/reflect-construct.js
+++ b/test/mjsunit/harmony/reflect-construct.js
@@ -279,7 +279,10 @@
 (function() {
   function* f() { yield 1; yield 2; }
   function* g() { yield 3; yield 4; }
-  assertThrows(()=>Reflect.construct(f, [], g));
+  var o = Reflect.construct(f, [], g);
+  assertEquals([1, 2], [...o]);
+  assertTrue(o.__proto__ === g.prototype);
+  assertTrue(o.__proto__ !== f.prototype);
 })();
 
 (function () {