Show service worker navigation preload requests in DevTools Network tab

third_party/WebKit/Source/web/ServiceWorkerGlobalScopeProxy.h

Index: third_party/WebKit/Source/web/ServiceWorkerGlobalScopeProxy.h
diff --git a/third_party/WebKit/Source/web/ServiceWorkerGlobalScopeProxy.h b/third_party/WebKit/Source/web/ServiceWorkerGlobalScopeProxy.h
index cf90ffb53f76557eceac7a23e13255c5fce68310..08c403fbd56018d4317807b99695f3eb1a5a9d29 100644
--- a/third_party/WebKit/Source/web/ServiceWorkerGlobalScopeProxy.h
+++ b/third_party/WebKit/Source/web/ServiceWorkerGlobalScopeProxy.h
@@ -112,6 +112,7 @@ class ServiceWorkerGlobalScopeProxy final
   void dispatchPaymentRequestEvent(int,
                                    const WebPaymentAppRequestData&) override;
   bool hasFetchEventHandler() override;
+  void onNavigationPreloadSent(int fetchEventID, const WebURL&) override;
   void onNavigationPreloadResponse(
       int fetchEventID,
       std::unique_ptr<WebURLResponse>,
@@ -119,6 +120,8 @@ class ServiceWorkerGlobalScopeProxy final
   void onNavigationPreloadError(
       int fetchEventID,
       std::unique_ptr<WebServiceWorkerError>) override;
+  void onNavigationPreloadCompleted(int fetchEventID,
+                                    int64_t encodedDataLength) override;
 
   // WorkerReportingProxy overrides:
   void countFeature(UseCounter::Feature) override;