1 files changed, 17 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/createImageBitmap-worker.js b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/createImageBitmap-worker.js
new file mode 100644
index 0000000000..67a0904e47
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/element/manual/imagebitmap/createImageBitmap-worker.js
@@ -0,0 +1,17 @@
+function makeBlob() {
+    return new Promise(function(resolve, reject) {
+        var xhr = new XMLHttpRequest();
+        xhr.open("GET", '/images/pattern.png');
+        xhr.responseType = 'blob';
+        xhr.send();
+        xhr.onload = function() {
+            resolve(xhr.response);
+        };
+    });
+}
+
+addEventListener("message", () => {
+    makeBlob().then(createImageBitmap).then(bitmap => {
+        postMessage(bitmap, [bitmap]);
+    });
+});