Adding upstream version 115.8.0esr.upstream/115.8.0esr

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 25 insertions, 0 deletions

diff --git a/testing/web-platform/tests/performance-timeline/idlharness.any.js b/testing/web-platform/tests/performance-timeline/idlharness.any.js
new file mode 100644
index 0000000000..32efebe98f
--- /dev/null
+++ b/testing/web-platform/tests/performance-timeline/idlharness.any.js
@@ -0,0 +1,25 @@
+// META: global=window,worker
+// META: script=/resources/WebIDLParser.js
+// META: script=/resources/idlharness.js
+
+// https://w3c.github.io/performance-timeline/
+
+'use strict';
+
+idl_test(
+  ['performance-timeline'],
+  ['hr-time', 'dom'],
+  async idl_array => {
+    idl_array.add_objects({
+      Performance: ['performance'],
+      PerformanceObserver: ['observer'],
+      PerformanceObserverEntryList: ['entryList'],
+    });
+
+    self.entryList = await new Promise((resolve, reject) => {
+      self.observer = new PerformanceObserver(resolve);
+      observer.observe({ entryTypes: ['mark'] });
+      performance.mark('test');
+    });
+  }
+);