service worker: Update comment in ServiceWorkerNewScriptLoader::OnReceiveRedirect()

Follow the spec update.

Bug: N/A
Tbr: nhiroki@chromium.org
Change-Id: I7e3a79257f9c33d0287ddc21a2f135ad2fdbe575
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1577318Reviewed-by: Hiroki Nakagawa <nhiroki@chromium.org>
Commit-Queue: Kenichi Ishibashi <bashi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#652816}

content/browser/service_worker/service_worker_new_script_loader.cc

@@ -368,7 +368,7 @@ void ServiceWorkerNewScriptLoader::OnReceiveRedirect(
   DCHECK_EQ(type_, Type::kNetworkOnly);
   // Resource requests for service worker scripts should not follow redirects.
   //
-  // Step 7.5: "Set request's redirect mode to "error"."
+  // Step 9.5: "Set request's redirect mode to "error"."
   // https://w3c.github.io/ServiceWorker/#update-algorithm
   CommitCompleted(network::URLLoaderCompletionStatus(net::ERR_UNSAFE_REDIRECT),
                   kServiceWorkerRedirectError);