Show service worker navigation preload requests in DevTools Network tab

third_party/WebKit/Source/web/ServiceWorkerGlobalScopeProxy.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 94 matching lines @@
                                       int actionIndex,
                                       const WebString& reply) override;
   void dispatchNotificationCloseEvent(int,
                                       const WebString& notificationID,
                                       const WebNotificationData&) override;
   void dispatchPushEvent(int, const WebString& data) override;
   void dispatchSyncEvent(int, const WebString& tag, LastChanceOption) override;
   void dispatchPaymentRequestEvent(int,
                                    const WebPaymentAppRequestData&) override;
   bool hasFetchEventHandler() override;
+  void onNavigationPreloadSent(int fetchEventID, const WebURL&) override;
   void onNavigationPreloadResponse(
       int fetchEventID,
       std::unique_ptr<WebURLResponse>,
       std::unique_ptr<WebDataConsumerHandle>) override;
   void onNavigationPreloadError(
       int fetchEventID,
       std::unique_ptr<WebServiceWorkerError>) override;
+  void onNavigationPreloadCompleted(int fetchEventID,
+                                    int64_t encodedDataLength) override;
 
   // WorkerReportingProxy overrides:
   void countFeature(UseCounter::Feature) override;
   void countDeprecation(UseCounter::Feature) override;
   void reportException(const String& errorMessage,
                        std::unique_ptr<SourceLocation>,
                        int exceptionId) override;
   void reportConsoleMessage(MessageSource,
                             MessageLevel,
                             const String& message,
@@ skipping 38 matching lines @@
   HeapHashMap<int, Member<FetchEvent>> m_pendingPreloadFetchEvents;
 
   WebServiceWorkerContextClient* m_client;
 
   CrossThreadPersistent<ServiceWorkerGlobalScope> m_workerGlobalScope;
 };
 
 }  // namespace blink
 
 #endif  // ServiceWorkerGlobalScopeProxy_h