Add check for PlzNavigate in ServiceWorkerFetchDispatcher.

content/browser/service_worker/service_worker_fetch_dispatcher.cc

Index: content/browser/service_worker/service_worker_fetch_dispatcher.cc
diff --git a/content/browser/service_worker/service_worker_fetch_dispatcher.cc b/content/browser/service_worker/service_worker_fetch_dispatcher.cc
index 8eac483c670676423c6a39180151c395431ff17f..680920fdea9421d09644f2f70aa18d2c4e2d52f1 100644
--- a/content/browser/service_worker/service_worker_fetch_dispatcher.cc
+++ b/content/browser/service_worker/service_worker_fetch_dispatcher.cc
@@ -22,6 +22,7 @@
 #include "content/common/service_worker/service_worker_utils.h"
 #include "content/common/url_loader.mojom.h"
 #include "content/common/url_loader_factory.mojom.h"
+#include "content/public/common/browser_side_navigation_policy.h"
 #include "content/public/common/content_features.h"
 #include "net/log/net_log.h"
 #include "net/log/net_log_capture_mode.h"
@@ -295,6 +296,10 @@ void ServiceWorkerFetchDispatcher::MaybeStartNavigationPreload(
     // Origin-Trial for NavigationPreload.
     return;
   }
+  if (IsBrowserSideNavigationEnabled()) {
+    // TODO(horo): Support NavigationPreload with PlzNavigate.

[falken, 2016/10/25 07:32:38]

how about calling NOTIMPLEMENTED()

[horo, 2016/10/25 07:58:39]

Done.

+    return;
+  }
   DCHECK(!url_loader_factory_getter.is_null());
   mojom::URLLoaderFactoryPtr factory;
   url_loader_factory_getter.Run(mojo::GetProxy(&factory));