Add m-esr52 at 52.6.0

1 files changed, 16 insertions, 0 deletions

diff --git a/dom/workers/test/serviceworkers/worker_unregister.js b/dom/workers/test/serviceworkers/worker_unregister.js
new file mode 100644
index 000000000..7a3e764f4
--- /dev/null
+++ b/dom/workers/test/serviceworkers/worker_unregister.js
@@ -0,0 +1,16 @@
+onmessage = function(e) {
+  clients.matchAll().then(function(c) {
+    if (c.length === 0) {
+      // We cannot proceed.
+      return;
+    }
+
+    registration.unregister().then(function() {
+      c[0].postMessage('DONE');
+    }, function() {
+      c[0].postMessage('ERROR');
+    }).then(function() {
+      c[0].postMessage('FINISH');
+    });
+  });
+}