Use OrderedHashTables as the backing store of JSSet and JSMap

src/objects-debug.cc

 // Copyright 2012 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:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 659 matching lines @@
           elements()->IsFixedArray() ||
           elements()->IsFixedDoubleArray());
   }
 }
 
 
 void JSSet::JSSetVerify() {
   CHECK(IsJSSet());
   JSObjectVerify();
   VerifyHeapPointer(table());
-  CHECK(table()->IsHashTable() || table()->IsUndefined());
+  CHECK(table()->IsOrderedHashSet() || table()->IsUndefined());
 }
 
 
 void JSMap::JSMapVerify() {
   CHECK(IsJSMap());
   JSObjectVerify();
   VerifyHeapPointer(table());
-  CHECK(table()->IsHashTable() || table()->IsUndefined());
+  CHECK(table()->IsOrderedHashMap() || table()->IsUndefined());
 }
 
 
 void JSWeakMap::JSWeakMapVerify() {
   CHECK(IsJSWeakMap());
   JSObjectVerify();
   VerifyHeapPointer(table());
   CHECK(table()->IsHashTable() || table()->IsUndefined());
 }
 
@@ skipping 460 matching lines @@
   for (int i = 0; i < number_of_transitions(); ++i) {
     if (!CheckOneBackPointer(current_map, GetTarget(i))) return false;
   }
   return true;
 }
 
 
 #endif  // DEBUG
 
 } }  // namespace v8::internal