2 files changed, 21 insertions, 2 deletions
diff --git a/testing/web-platform/tests/clipboard-apis/resources/page.html b/testing/web-platform/tests/clipboard-apis/resources/page.html
index 35bde8e501..fc8bd895d1 100644
--- a/testing/web-platform/tests/clipboard-apis/resources/page.html
+++ b/testing/web-platform/tests/clipboard-apis/resources/page.html
@@ -9,8 +9,8 @@
 window.addEventListener("message", async (e) => {
   if (e.data && e.data[0] == "write") {
     test_driver.set_test_context(window.parent);
-    await test_driver.set_permission({name: 'clipboard-read'}, 'granted');
-    await test_driver.set_permission({name: 'clipboard-write'}, 'granted');
+    await tryGrantReadPermission();
+    await tryGrantWritePermission();
     await waitForUserActivation();
     await navigator.clipboard.write([
       new ClipboardItem({
diff --git a/testing/web-platform/tests/clipboard-apis/resources/user-activation.js b/testing/web-platform/tests/clipboard-apis/resources/user-activation.js
index ed294bb9cb..4535f8c6d7 100644
--- a/testing/web-platform/tests/clipboard-apis/resources/user-activation.js
+++ b/testing/web-platform/tests/clipboard-apis/resources/user-activation.js
@@ -23,3 +23,22 @@ async function waitForUserActivation() {
   test_driver.click(document.body);
   await clickedPromise;
 }
+
+async function trySetPermission(perm, state) {
+  try {
+    await test_driver.set_permission({ name: perm }, state)
+  } catch {
+    // This is expected, as clipboard permissions are not supported by every engine
+    // and also the set_permission. The permission is not required by such engines as
+    // they require user activation instead.
+  }
+}
+
+async function tryGrantReadPermission() {
+  await trySetPermission("clipboard-read", "granted");
+}
+
+async function tryGrantWritePermission() {
+  await trySetPermission("clipboard-write", "granted");
+}
+