1 files changed, 9 insertions, 0 deletions
diff --git a/dom/workers/test/worker_bug1278777.js b/dom/workers/test/worker_bug1278777.js
new file mode 100644
index 0000000000..f596ee978b
--- /dev/null
+++ b/dom/workers/test/worker_bug1278777.js
@@ -0,0 +1,9 @@
+var xhr = new XMLHttpRequest();
+xhr.responseType = "blob";
+xhr.open("GET", "worker_bug1278777.js");
+
+xhr.onload = function () {
+  postMessage(xhr.response instanceof Blob);
+};
+
+xhr.send();