Reverted change to ASSERT is void Dictionary<Shape, Key>::SetEntry.

src/objects-inl.h

Index: src/objects-inl.h
===================================================================
--- src/objects-inl.h	(revision 2331)
+++ src/objects-inl.h	(working copy)
@@ -2642,7 +2642,7 @@
                                       Object* key,
                                       Object* value,
                                       PropertyDetails details) {
-  ASSERT(!Shape::kIsEnumerable || details.index() > 0);
+  ASSERT(!key->IsString() || details.index() > 0);
   int index = HashTable<Shape, Key>::EntryToIndex(entry);
   WriteBarrierMode mode = FixedArray::GetWriteBarrierMode();
   FixedArray::set(index, key, mode);