FetchEvent should not forcibly reject an unresolved Promise when destructed

LayoutTests/http/tests/serviceworker/fetch-event.html

Index: LayoutTests/http/tests/serviceworker/fetch-event.html
diff --git a/LayoutTests/http/tests/serviceworker/fetch-event.html b/LayoutTests/http/tests/serviceworker/fetch-event.html
index 4571fa0ab6ec869c3af633c4ee46592f936f222e..ff0ff5a35ff20494a601deca712604e600356955 100644
--- a/LayoutTests/http/tests/serviceworker/fetch-event.html
+++ b/LayoutTests/http/tests/serviceworker/fetch-event.html
@@ -121,24 +121,6 @@ var worker = 'resources/fetch-event-test-worker.js';
 }());
 
 (function() {
-    var t = async_test(
-        'Service Worker responds to fetch event with unresolved promise');
-    var scope = 'resources/simple.html?unresolved';
-    service_worker_unregister_and_register(t, worker, scope)
-      .then(t.step_func(function(sw) {
-          return wait_for_state(t, sw, 'activated');
-        }))
-      .then(t.step_func(function() { return with_iframe(scope); }))
-      .then(t.step_func(function(frame) {
-          assert_equals(frame.contentDocument.body.textContent,
-                        'Here\'s a simple html file.\n',
-                        'Response should come from fallback to native fetch');
-          return service_worker_unregister_and_done(t, scope);
-        }))
-      .catch(unreached_rejection(t));
-}());
-
-(function() {
     var t = async_test('Service Worker fetches other file in fetch event');
     var scope = 'resources/simple.html?fetch';
     service_worker_unregister_and_register(t, worker, scope)