1 files changed, 27 insertions, 0 deletions
diff --git a/devtools/client/performance/test/doc_simple-test.html b/devtools/client/performance/test/doc_simple-test.html
new file mode 100644
index 000000000..5cda6eaa6
--- /dev/null
+++ b/devtools/client/performance/test/doc_simple-test.html
@@ -0,0 +1,27 @@
+<!-- Any copyright is dedicated to the Public Domain.
+     http://creativecommons.org/publicdomain/zero/1.0/ -->
+<!doctype html>
+
+<html>
+  <head>
+    <meta charset="utf-8"/>
+    <title>Performance test page</title>
+  </head>
+
+  <body>
+    <script type="text/javascript">
+      "use strict";
+      let x = 1;
+      function test() {
+        document.body.style.borderTop = x + "px solid red";
+        x = 1 ^ x;
+        // flush pending reflows
+        document.body.innerHeight;
+      }
+
+      // Prevent this script from being garbage collected.
+      window.setInterval(test, 1);
+    </script>
+  </body>
+
+</html>