Keep track of script objects in a weak fixed array.

src/objects.cc

Index: src/objects.cc
diff --git a/src/objects.cc b/src/objects.cc
index 1f25a5d11b7dcd788a6541e41781eb98e826f6b7..c745cae233c8e7e3a46eb452e6496c230ef8c19f 100644
--- a/src/objects.cc
+++ b/src/objects.cc
@@ -14843,49 +14843,6 @@ void WeakHashTable::AddEntry(int entry, Handle<WeakCell> key_cell,
 }
 
 
-#ifdef DEBUG
-Object* WeakValueHashTable::LookupWeak(Handle<Object> key) {
-  Object* value = Lookup(key);
-  if (value->IsWeakCell() && !WeakCell::cast(value)->cleared()) {
-    value = WeakCell::cast(value)->value();
-  }
-  return value;
-}
-#endif  // DEBUG
-
-
-Handle<WeakValueHashTable> WeakValueHashTable::PutWeak(
-    Handle<WeakValueHashTable> table, Handle<Object> key,
-    Handle<HeapObject> value) {
-  Handle<WeakCell> cell = value->GetIsolate()->factory()->NewWeakCell(value);
-  return Handle<WeakValueHashTable>::cast(
-      Put(Handle<ObjectHashTable>::cast(table), key, cell));
-}
-
-
-Handle<FixedArray> WeakValueHashTable::GetWeakValues(
-    Handle<WeakValueHashTable> table) {
-  Isolate* isolate = table->GetIsolate();
-  uint32_t capacity = table->Capacity();
-  Handle<FixedArray> results = isolate->factory()->NewFixedArray(capacity);
-  int length = 0;
-  for (uint32_t i = 0; i < capacity; i++) {
-    uint32_t key_index = table->EntryToIndex(i);
-    Object* key = table->get(key_index);
-    if (!table->IsKey(key)) continue;
-    uint32_t value_index = table->EntryToValueIndex(i);
-    WeakCell* value_cell = WeakCell::cast(table->get(value_index));
-    if (value_cell->cleared()) {
-      table->RemoveEntry(i);
-    } else {
-      results->set(length++, value_cell->value());
-    }
-  }
-  results->Shrink(length);
-  return results;
-}
-
-
 template<class Derived, class Iterator, int entrysize>
 Handle<Derived> OrderedHashTable<Derived, Iterator, entrysize>::Allocate(
     Isolate* isolate, int capacity, PretenureFlag pretenure) {