diff -r 000000000000 -r 6474c204b198 storage/src/mozStorageResultSet.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/storage/src/mozStorageResultSet.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,59 @@
+/* -*- 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/. */
+
+#include "mozStorageRow.h"
+#include "mozStorageResultSet.h"
+
+namespace mozilla {
+namespace storage {
+
+////////////////////////////////////////////////////////////////////////////////
+//// ResultSet
+
+ResultSet::ResultSet()
+: mCurrentIndex(0)
+{
+}
+
+ResultSet::~ResultSet()
+{
+  mData.Clear();
+}
+
+nsresult
+ResultSet::add(mozIStorageRow *aRow)
+{
+  return mData.AppendObject(aRow) ? NS_OK : NS_ERROR_OUT_OF_MEMORY;
+}
+
+/**
+ * Note:  This object is only ever accessed on one thread at a time.  It it not
+ *        threadsafe, but it does need threadsafe AddRef and Release.
+ */
+NS_IMPL_ISUPPORTS(
+  ResultSet,
+  mozIStorageResultSet
+)
+
+////////////////////////////////////////////////////////////////////////////////
+//// mozIStorageResultSet
+
+NS_IMETHODIMP
+ResultSet::GetNextRow(mozIStorageRow **_row)
+{
+  NS_ENSURE_ARG_POINTER(_row);
+
+  if (mCurrentIndex >= mData.Count()) {
+    // Just return null here
+    return NS_OK;
+  }
+
+  NS_ADDREF(*_row = mData.ObjectAt(mCurrentIndex++));
+  return NS_OK;
+}
+
+} // namespace storage
+} // namespace mozilla