1 files changed, 18 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/semantics/interactive-elements/the-dialog-element/resources/common.js b/testing/web-platform/tests/html/semantics/interactive-elements/the-dialog-element/resources/common.js
new file mode 100644
index 0000000000..c72ed7f19c
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/interactive-elements/the-dialog-element/resources/common.js
@@ -0,0 +1,18 @@
+function waitUntilLoadedAndAutofocused() {
+  return new Promise(function(resolve) {
+      var loaded = false;
+      var autofocused = false;
+      window.addEventListener('load', function() {
+          loaded = true;
+          if (autofocused)
+              resolve();
+      }, false);
+      document.addEventListener('focusin', function() {
+          if (autofocused)
+              return;
+          autofocused = true;
+          if (loaded)
+              resolve();
+      }, false);
+    });
+}
+\ No newline at end of file