An API returning a Promise should not throw an exceptions [overload version]

LayoutTests/http/tests/serviceworker/cache-add-expected.txt

Index: LayoutTests/http/tests/serviceworker/cache-add-expected.txt
diff --git a/LayoutTests/http/tests/serviceworker/cache-add-expected.txt b/LayoutTests/http/tests/serviceworker/cache-add-expected.txt
index 9f493a3be6c808b656ce82b19d1aba2636f114ff..1bbe7ec7d2d987534d7b78fc72b80342ecf17a5c 100644
--- a/LayoutTests/http/tests/serviceworker/cache-add-expected.txt
+++ b/LayoutTests/http/tests/serviceworker/cache-add-expected.txt
@@ -1,8 +1,6 @@
 This is a testharness.js-based test.
 PASS Service Worker: Cache.add and Cache.addAll 
-FAIL Cache.add called with no arguments Failed to execute 'add' on 'Cache': 1 argument required, but only 0 present.(stack: TypeError: Failed to execute 'add' on 'Cache': 1 argument required, but only 0 present.
-    at TypeError (native)
-    at http://127.0.0.1:8000/serviceworker/resources/cache-add-worker.js:6:13)
+PASS Cache.add called with no arguments 
 FAIL Cache.add called with relative URL specified as a string Cache is not implemented
 FAIL Cache.add called with non-HTTP/HTTPS URL assert_throws: Cache.add should throw a NetworkError for non-HTTP/HTTPS URLs. function "function () { throw e; }" threw object "NotSupportedError: Cache is not implemented" that is not a DOMException NetworkError: property "code" is equal to 9, expected 19
 FAIL Cache.add called with Request object Cache is not implemented