diff -r 000000000000 -r 6474c204b198 xpcom/ds/nsSupportsArrayEnumerator.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/xpcom/ds/nsSupportsArrayEnumerator.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,36 @@
+/* -*- Mode: C++; tab-width: 4; 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 nsSupportsArrayEnumerator_h___
+#define nsSupportsArrayEnumerator_h___
+
+#include "nsIEnumerator.h"
+#include "mozilla/Attributes.h"
+
+class nsISupportsArray;
+
+class nsSupportsArrayEnumerator MOZ_FINAL : public nsIBidirectionalEnumerator {
+public:
+  NS_DECL_ISUPPORTS
+
+  nsSupportsArrayEnumerator(nsISupportsArray* array);
+
+  // nsIEnumerator methods:
+  NS_DECL_NSIENUMERATOR
+
+  // nsIBidirectionalEnumerator methods:
+  NS_DECL_NSIBIDIRECTIONALENUMERATOR
+
+private:
+  ~nsSupportsArrayEnumerator();
+
+protected:
+  nsISupportsArray*     mArray;
+  int32_t               mCursor;
+
+};
+
+#endif // __nsSupportsArrayEnumerator_h
+