1 files changed, 24 insertions, 0 deletions
diff --git a/accessible/base/nsAccCache.h b/accessible/base/nsAccCache.h
new file mode 100644
index 0000000000..db0c877035
--- /dev/null
+++ b/accessible/base/nsAccCache.h
@@ -0,0 +1,24 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef _nsAccCache_H_
+#define _nsAccCache_H_
+
+////////////////////////////////////////////////////////////////////////////////
+// LocalAccessible cache utils
+////////////////////////////////////////////////////////////////////////////////
+
+template <class T>
+void UnbindCacheEntriesFromDocument(
+    nsRefPtrHashtable<nsPtrHashKey<const void>, T>& aCache) {
+  for (auto iter = aCache.Iter(); !iter.Done(); iter.Next()) {
+    T* accessible = iter.Data();
+    MOZ_ASSERT(accessible && !accessible->IsDefunct());
+    accessible->Document()->UnbindFromDocument(accessible);
+    iter.Remove();
+  }
+}
+
+#endif