1 files changed, 28 insertions, 0 deletions
diff --git a/testing/web-platform/tests/intersection-observer/resources/timestamp-subframe.html b/testing/web-platform/tests/intersection-observer/resources/timestamp-subframe.html
new file mode 100644
index 0000000000..143e4f6e23
--- /dev/null
+++ b/testing/web-platform/tests/intersection-observer/resources/timestamp-subframe.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<style>
+#target {
+  width: 100px;
+  height: 100px;
+  background-color: green;
+}
+.spacer {
+  width: height: 100px
+}
+</style>
+
+<div class="spacer"></div>
+<div id="target"></div>
+<div class="spacer"></div>
+
+<script>
+document.createObserverCallback = function(entries) {
+  return function(newEntries) {
+    for (var i in newEntries) {
+      entries.push(newEntries[i]);
+    }
+  };
+}
+document.createObserver = function(callback) {
+  return new IntersectionObserver(callback, {});
+};
+</script>