diff -r 000000000000 -r 6474c204b198 memory/mozalloc/fallible.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/memory/mozalloc/fallible.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,14 @@
+/* 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 mozilla_fallible_h
+#define mozilla_fallible_h
+
+namespace mozilla {
+
+struct fallible_t { };
+
+} // namespace mozilla
+
+#endif // mozilla_fallible_h