Disable WorkerNetworkIsolationKeyBrowserTest.ServiceWorkerMainScriptRequest with NS disabled

Failing on Mojo Android bot:
https://ci.chromium.org/p/chromium/builders/ci/Mojo%20Android/17793


TBR=jam@chromium.org

Bug: 984099
Change-Id: I5adec7f70ca1dfcf89472aecca46894916741dde
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1705033
Commit-Queue: Clark DuVall <cduvall@chromium.org>
Reviewed-by: Clark DuVall <cduvall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#678053}

content/browser/worker_network_isolation_key_browsertest.cc

@@ -260,6 +260,10 @@ INSTANTIATE_TEST_SUITE_P(
 // also won't trigger an update.
 IN_PROC_BROWSER_TEST_F(WorkerNetworkIsolationKeyBrowserTest,
                        ServiceWorkerMainScriptRequest) {
+  // TODO(http://crbug.com/984099): Fix this with network service disabled.
+  if (!base::FeatureList::IsEnabled(network::features::kNetworkService))
+    return;
+
   // Discard the old process to clear the in-memory cache.
   CrossProcessNavigation();