1 files changed, 11 insertions, 0 deletions
diff --git a/testing/web-platform/tests/webcodecs/videoFrame-serialization.crossAgentCluster.serviceworker.js b/testing/web-platform/tests/webcodecs/videoFrame-serialization.crossAgentCluster.serviceworker.js
new file mode 100644
index 0000000000..218157c5e9
--- /dev/null
+++ b/testing/web-platform/tests/webcodecs/videoFrame-serialization.crossAgentCluster.serviceworker.js
@@ -0,0 +1,11 @@
+let received = new Map();
+self.onmessage = (e) => {
+  if (e.data.hasOwnProperty('id')) {
+    e.source.postMessage(
+      received.get(e.data.id) ? 'RECEIVED' : 'NOT_RECEIVED');
+    return;
+  }
+  if (e.data.toString() == '[object VideoFrame]') {
+    received.set(e.data.timestamp, e.data);
+  }
+};