Stage ES6 promises and weak collections

test/mjsunit/harmony/collections.js

Index: test/mjsunit/harmony/collections.js
diff --git a/test/mjsunit/harmony/collections.js b/test/mjsunit/harmony/collections.js
index 7e95b9e110749f3b83efddef13c8c092d8adc714..b33d08063d711491c1177600df5ac4f691c33ba5 100644
--- a/test/mjsunit/harmony/collections.js
+++ b/test/mjsunit/harmony/collections.js
@@ -25,10 +25,11 @@
 // (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: --harmony-collections --expose-gc --allow-natives-syntax
+// Flags: --harmony-collections --harmony-weak-collections
+// Flags: --expose-gc --allow-natives-syntax
 
 
-// Test valid getter and setter calls on Sets.
+// Test valid getter and setter calls on Sets and WeakSets
 function TestValidSetCalls(m) {
   assertDoesNotThrow(function () { m.add(new Object) });
   assertDoesNotThrow(function () { m.has(new Object) });
@@ -63,7 +64,7 @@ function TestInvalidCalls(m) {
 TestInvalidCalls(new WeakMap);
 
 
-// Test expected behavior for Sets
+// Test expected behavior for Sets and WeakSets
 function TestSet(set, key) {
   assertFalse(set.has(key));
   assertSame(undefined, set.add(key));