Remove unnecessary NetworkService flag check in ResourceDispatcher

blink::ServiceWorkerUtils::IsServicificationEnabled() checks
whether NetworkService is enabled, so we don't need the check
in ResourceDispatcher::StartAsync().

Bug: N/A
Change-Id: I06bab175489f42dc0cefa2a257806db29192eba1
Reviewed-on: https://chromium-review.googlesource.com/1168707Reviewed-by: Makoto Shimazu <shimazu@chromium.org>
Reviewed-by: Yutaka Hirano <yhirano@chromium.org>
Commit-Queue: Kenichi Ishibashi <bashi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#581828}

content/renderer/loader/resource_dispatcher.cc

@@ -722,8 +722,7 @@ int ResourceDispatcher::StartAsync(
   uint32_t options = network::mojom::kURLLoadOptionNone;
   // TODO(jam): use this flag for ResourceDispatcherHost code path once
   // MojoLoading is the only IPC code path.
-  if ((blink::ServiceWorkerUtils::IsServicificationEnabled() ||
-       base::FeatureList::IsEnabled(network::features::kNetworkService)) &&
+  if (blink::ServiceWorkerUtils::IsServicificationEnabled() &&
       request->fetch_request_context_type != REQUEST_CONTEXT_TYPE_FETCH) {
     // MIME sniffing should be disabled for a request initiated by fetch().
     options |= network::mojom::kURLLoadOptionSniffMimeType;