1 files changed, 13 insertions, 0 deletions
diff --git a/gfx/layers/apz/test/mochitest/helper_hittest_iframe_perspective_child.html b/gfx/layers/apz/test/mochitest/helper_hittest_iframe_perspective_child.html
new file mode 100644
index 0000000000..37f20ad725
--- /dev/null
+++ b/gfx/layers/apz/test/mochitest/helper_hittest_iframe_perspective_child.html
@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<script>
+  window.addEventListener("mousedown", event => {
+    let data = JSON.stringify({
+      type: "got-mouse-down",
+      coords: {
+        offsetX: event.clientX,
+        offsetY: event.clientY
+      }
+    });
+    window.parent.postMessage(data, "*");
+  });
+</script>