1 files changed, 9 insertions, 0 deletions
diff --git a/testing/web-platform/tests/measure-memory/resources/worker.js b/testing/web-platform/tests/measure-memory/resources/worker.js
new file mode 100644
index 0000000000..000df12729
--- /dev/null
+++ b/testing/web-platform/tests/measure-memory/resources/worker.js
@@ -0,0 +1,9 @@
+self.onmessage = function(message) {
+  const length = message.data.bytes;
+  self.root = new Uint8Array(length);
+  // Set some elements to disable potential copy-on-write optimizations.
+  for (let i = 0; i < length; i += 256) {
+    self.root[i] = 1;
+  }
+  postMessage(self.location.href);
+}