Hook up ProfileIOData's URLRequestContext to a NetworkService.

content/browser/webui/web_ui_url_loader_factory.cc

Index: content/browser/webui/web_ui_url_loader_factory.cc
diff --git a/content/browser/webui/web_ui_url_loader_factory.cc b/content/browser/webui/web_ui_url_loader_factory.cc
index 99bc1b30899315efd42bb003cd921af44688c9e7..4677cdd898dc7626462e21024a8ec832a40198f8 100644
--- a/content/browser/webui/web_ui_url_loader_factory.cc
+++ b/content/browser/webui/web_ui_url_loader_factory.cc
@@ -234,7 +234,7 @@ class WebUIURLLoaderFactory : public mojom::URLLoaderFactory,
                                 traffic_annotation) override {
     DCHECK_CURRENTLY_ON(BrowserThread::UI);
     if (request.url.host_piece() == kChromeUINetworkViewCacheHost) {
-      storage_partition_->network_context()->HandleViewCacheRequest(
+      storage_partition_->GetNetworkContext()->HandleViewCacheRequest(
           request.url, std::move(client));
       return;
     }