Implement FetchEvent.navigationPreload

third_party/WebKit/public/web/modules/serviceworker/WebServiceWorkerContextClient.h

Index: third_party/WebKit/public/web/modules/serviceworker/WebServiceWorkerContextClient.h
diff --git a/third_party/WebKit/public/web/modules/serviceworker/WebServiceWorkerContextClient.h b/third_party/WebKit/public/web/modules/serviceworker/WebServiceWorkerContextClient.h
index cdf5b2b5b74ba580b2f5e83b18f9ba7b9bcb1df5..abf69dd82af4c4e18d6da2218b2b60d8bba0719d 100644
--- a/third_party/WebKit/public/web/modules/serviceworker/WebServiceWorkerContextClient.h
+++ b/third_party/WebKit/public/web/modules/serviceworker/WebServiceWorkerContextClient.h
@@ -36,6 +36,7 @@
 #include "public/platform/modules/serviceworker/WebServiceWorkerClientsClaimCallbacks.h"
 #include "public/platform/modules/serviceworker/WebServiceWorkerClientsInfo.h"
 #include "public/platform/modules/serviceworker/WebServiceWorkerEventResult.h"
+#include "public/platform/modules/serviceworker/WebServiceWorkerPreloadResponseCallbacks.h"
 #include "public/platform/modules/serviceworker/WebServiceWorkerSkipWaitingCallbacks.h"
 #include "public/web/WebDevToolsAgentClient.h"
 #include <v8.h>
@@ -189,6 +190,13 @@ class WebServiceWorkerContextClient {
                                   WebServiceWorkerEventResult result,
                                   double eventDispatchTime) {}
 
+  // ServiceWorker specific method. Called after a FetchEvent is created via
+  // WebServiceWorkerContextProxy::dispatchFetchEvent() with
+  // navigationPreloadSent flag set to register the preload response callback.
+  virtual void registerPreloadResponseCallback(
+      int eventID,
+      std::unique_ptr<WebServiceWorkerPreloadResponseCallbacks>) {}
+
   // Ownership of the returned object is transferred to the caller.
   // This is called on the main thread.
   virtual WebServiceWorkerNetworkProvider* createServiceWorkerNetworkProvider(