Show service worker navigation preload requests in DevTools Network tab

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

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 28 matching lines @@
 
 namespace blink {
 
 class WebDataConsumerHandle;
 class WebServiceWorkerRequest;
 class WebString;
 struct WebNotificationData;
 struct WebPaymentAppRequestData;
 struct WebServiceWorkerClientInfo;
 struct WebServiceWorkerError;
+class WebURL;
 class WebURLResponse;
 
 // A proxy interface to talk to the worker's GlobalScope implementation.
 // All methods of this class must be called on the worker thread.
 class WebServiceWorkerContextProxy {
  public:
   virtual ~WebServiceWorkerContextProxy() {}
 
   virtual void setRegistration(
       std::unique_ptr<WebServiceWorkerRegistration::Handle>) = 0;
@@ skipping 34 matching lines @@
 
   // Once the ServiceWorker has finished handling the sync event,
   // didHandleSyncEvent is called on the context client.
   virtual void dispatchSyncEvent(int syncEventID,
                                  const WebString& tag,
                                  LastChanceOption) = 0;
 
   virtual void dispatchPaymentRequestEvent(int eventID,
                                            const WebPaymentAppRequestData&) = 0;
 
+  // Called when the ServiceWorker received a FetchEvent which has triggered a
+  // navigation preload request.
+  virtual void onNavigationPreloadSent(int fetchEventID, const WebURL&) = 0;
   virtual void onNavigationPreloadResponse(
       int fetchEventID,
       std::unique_ptr<WebURLResponse>,
       std::unique_ptr<WebDataConsumerHandle>) = 0;
   virtual void onNavigationPreloadError(
       int fetchEventID,
       std::unique_ptr<WebServiceWorkerError>) = 0;
+  virtual void onNavigationPreloadCompleted(int fetchEventID,
+                                            int64_t encodedDataLength) = 0;
 };
 
 }  // namespace blink
 
 #endif  // WebServiceWorkerContextProxy_h