Implement FetchEvent.navigationPreload

content/renderer/service_worker/service_worker_context_client.h

Index: content/renderer/service_worker/service_worker_context_client.h
diff --git a/content/renderer/service_worker/service_worker_context_client.h b/content/renderer/service_worker/service_worker_context_client.h
index 622ed930e1addf33f73b1cf960a923ab1d9f2847..7bbf1b84795f7ef251804523898403e4efa10a8a 100644
--- a/content/renderer/service_worker/service_worker_context_client.h
+++ b/content/renderer/service_worker/service_worker_context_client.h
@@ -26,6 +26,7 @@
 #include "services/service_manager/public/interfaces/interface_provider.mojom.h"
 #include "third_party/WebKit/public/platform/WebMessagePortChannel.h"
 #include "third_party/WebKit/public/platform/modules/serviceworker/WebServiceWorkerError.h"
+#include "third_party/WebKit/public/platform/modules/serviceworker/WebServiceWorkerPreloadResponseCallbacks.h"
 #include "third_party/WebKit/public/platform/modules/serviceworker/service_worker_event_status.mojom.h"
 #include "third_party/WebKit/public/web/modules/serviceworker/WebServiceWorkerContextClient.h"
 #include "third_party/WebKit/public/web/modules/serviceworker/WebServiceWorkerContextProxy.h"
@@ -193,6 +194,10 @@ class ServiceWorkerContextClient
   void registerForeignFetchScopes(
       const blink::WebVector<blink::WebURL>& sub_scopes,
       const blink::WebVector<blink::WebSecurityOrigin>& origins) override;
+  void registerPreloadResponseCallback(
+      int eventID,
+      std::unique_ptr<blink::WebServiceWorkerPreloadResponseCallbacks>)
+      override;
 
   virtual void DispatchSyncEvent(
       const std::string& tag,
@@ -202,6 +207,7 @@ class ServiceWorkerContextClient
  private:
   struct WorkerContextData;
   class FetchEventDispatcherImpl;
+  class NavigationPreloadRequest;
 
   // Get routing_id for sending message to the ServiceWorkerVersion
   // in the browser process.
@@ -218,9 +224,11 @@ class ServiceWorkerContextClient
       int request_id,
       const ServiceWorkerMsg_ExtendableMessageEvent_Params& params);
   void OnInstallEvent(int request_id);
-  void DispatchFetchEvent(int fetch_event_id,
-                          const ServiceWorkerFetchRequest& request,
-                          const FetchCallback& callback);
+  void DispatchFetchEvent(
+      int fetch_event_id,
+      const ServiceWorkerFetchRequest& request,
+      std::unique_ptr<NavigationPreloadRequest> preload_request,
+      const FetchCallback& callback);
   void OnNotificationClickEvent(
       int request_id,
       const std::string& notification_id,