Adjust key behaviour for weak collections

test/mjsunit/harmony/private.js

Index: test/mjsunit/harmony/private.js
diff --git a/test/mjsunit/harmony/private.js b/test/mjsunit/harmony/private.js
index 218094c3d50632fb21f2c97e9403fdde883cd681..c08daf105055cfcc9ac8ea940c4372bf0b8e0803 100644
--- a/test/mjsunit/harmony/private.js
+++ b/test/mjsunit/harmony/private.js
@@ -196,25 +196,20 @@ TestSet()
 function TestCollections() {
   var set = new Set
   var map = new Map
-  var weakmap = new WeakMap
   for (var i in symbols) {
     set.add(symbols[i])
     map.set(symbols[i], i)
-    weakmap.set(symbols[i], i)
   }
   assertEquals(symbols.length, set.size)
   assertEquals(symbols.length, map.size)
   for (var i in symbols) {
     assertTrue(set.has(symbols[i]))
     assertTrue(map.has(symbols[i]))
-    assertTrue(weakmap.has(symbols[i]))
     assertEquals(i, map.get(symbols[i]))
-    assertEquals(i, weakmap.get(symbols[i]))
   }
   for (var i in symbols) {
     assertTrue(set.delete(symbols[i]))
     assertTrue(map.delete(symbols[i]))
-    assertTrue(weakmap.delete(symbols[i]))
   }
   assertEquals(0, set.size)
   assertEquals(0, map.size)