[Extension] Disable service worker based DeclarativeNetRequestLazyAPItest

This became flaky with crrev.com/c/2269982

Bug: 1111240,1091141
Change-Id: Ia79803d740d776022095b881e0ba66f608838103
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2328568
Commit-Queue: Kenichi Ishibashi <bashi@chromium.org>
Reviewed-by: Istiaque Ahmed <lazyboy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#793128}

chrome/browser/extensions/api/declarative_net_request/declarative_net_request_apitest.cc

@@ -75,7 +75,8 @@ INSTANTIATE_TEST_SUITE_P(PersistentBackground,
 INSTANTIATE_TEST_SUITE_P(EventPage,
                          DeclarativeNetRequestLazyAPItest,
                          ::testing::Values(ContextType::kEventPage));
-INSTANTIATE_TEST_SUITE_P(ServiceWorker,
+// Flaky (https://crbug.com/1111240)
+INSTANTIATE_TEST_SUITE_P(DISABLED_ServiceWorker,
                          DeclarativeNetRequestLazyAPItest,
                          ::testing::Values(ContextType::kServiceWorker));