diff -r 000000000000 -r 6474c204b198 dom/xslt/base/txOwningArray.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/xslt/base/txOwningArray.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,32 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* 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 txOwningArray_h__
+#define txOwningArray_h__
+
+// Class acting like a nsTArray except that it deletes its objects
+// on destruction. It does not however delete its objects on operations
+// like RemoveElementsAt or on |array[i] = bar|.
+
+template<class E>
+class txOwningArray : public nsTArray<E*>
+{
+public:
+    typedef nsTArray<E*> base_type;
+    typedef typename base_type::elem_type elem_type;
+
+    ~txOwningArray()
+    {
+        elem_type* iter = base_type::Elements();
+        elem_type* end = iter + base_type::Length();
+        for (; iter < end; ++iter) {
+            delete *iter;
+        }
+    }
+  
+};
+
+#endif // txOwningArray_h__