[es6] Implement Reflect.enumerate.

test/mjsunit/harmony/reflect-enumerate-delete.js

Index: test/mjsunit/harmony/reflect-enumerate-delete.js
diff --git a/test/mjsunit/for-in-delete.js b/test/mjsunit/harmony/reflect-enumerate-delete.js
similarity index 87%
copy from test/mjsunit/for-in-delete.js
copy to test/mjsunit/harmony/reflect-enumerate-delete.js
index e9fc060ae68bd1297183704a1d0d8b7a4638d6e4..1137d8a0a4a0f4f21c7f8c2889c45fcefd692fdf 100644
--- a/test/mjsunit/for-in-delete.js
+++ b/test/mjsunit/harmony/reflect-enumerate-delete.js
@@ -1,4 +1,4 @@
-// Copyright 2010 the V8 project authors. All rights reserved.
+// Copyright 2010-2015 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
@@ -25,12 +25,15 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-// Test that properties deleted during a for-in iteration do not show up in
-// the for-in.
+// Test that properties deleted during an enumeration do not show up in
+// the enumeration.  This is adapted from mjsunit/for-in-delete.js.
+
+// Flags: --harmony-reflect
+
 
 function f(o, expected, del) {
   var index = 0;
-  for (p in o) {
+  for (p of Reflect.enumerate(o)) {
     if (del) delete o[del];
     assertEquals(expected[index], p);
     index++;