diff -r 000000000000 -r 6474c204b198 storage/src/mozStorageError.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/storage/src/mozStorageError.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,33 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim: sw=2 ts=2 et lcs=trail\:.,tab\:>~ :
+ * 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 mozStorageError_h
+#define mozStorageError_h
+
+#include "mozIStorageError.h"
+#include "nsString.h"
+#include "mozilla/Attributes.h"
+
+namespace mozilla {
+namespace storage {
+
+class Error MOZ_FINAL : public mozIStorageError
+{
+public:
+  NS_DECL_THREADSAFE_ISUPPORTS
+  NS_DECL_MOZISTORAGEERROR
+
+  Error(int aResult, const char *aMessage);
+
+private:
+  int mResult;
+  nsCString mMessage;
+};
+
+} // namespace stoarge
+} // namespace mozilla
+
+#endif // mozStorageError_h