Bug 1456400 - [wdspec] Increase timeout for close_window/user_prompts.py test. r=whimboo

MozReview-Commit-ID: 1DLDkIPxlw8

--HG--
extra : rebase_source : 1d6a3e02351f17c0563f636f4fca5dbd6983a0c7

testing/web-platform/meta/MANIFEST.json

@@ -394477,7 +394477,9 @@
    "webdriver/tests/close_window/user_prompts.py": [
     [
      "/webdriver/tests/close_window/user_prompts.py",
-     {}
+     {
+      "timeout": "long"
+     }
     ]
    ],
    "webdriver/tests/contexts/json_serialize_windowproxy.py": [

testing/web-platform/tests/webdriver/tests/close_window/user_prompts.py

@@ -1,3 +1,5 @@
+# META: timeout=long
+
 from tests.support.asserts import assert_error, assert_dialog_handled
 from tests.support.fixtures import create_dialog, create_window
 from tests.support.inline import inline