service worker: Add NavigationPreload runtime flag and skeleton interface

third_party/WebKit/Source/modules/serviceworkers/ServiceWorkerRegistration.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef ServiceWorkerRegistration_h
 #define ServiceWorkerRegistration_h
 
 #include "bindings/core/v8/ActiveScriptWrappable.h"
 #include "bindings/core/v8/ScriptPromiseResolver.h"
 #include "core/dom/ActiveDOMObject.h"
 #include "core/events/EventTarget.h"
+#include "modules/serviceworkers/NavigationPreloadManager.h"
 #include "modules/serviceworkers/ServiceWorker.h"
 #include "modules/serviceworkers/ServiceWorkerRegistration.h"
 #include "platform/Supplementable.h"
 #include "public/platform/modules/serviceworker/WebServiceWorkerRegistration.h"
 #include "public/platform/modules/serviceworker/WebServiceWorkerRegistrationProxy.h"
 #include "wtf/Forward.h"
 #include <memory>
 
 namespace blink {
 
@@ skipping 32 matching lines @@
 
   // Returns an existing registration object for the handle if it exists.
   // Otherwise, returns a new registration object.
   static ServiceWorkerRegistration* getOrCreate(
       ExecutionContext*,
       std::unique_ptr<WebServiceWorkerRegistration::Handle>);
 
   ServiceWorker* installing() { return m_installing; }
   ServiceWorker* waiting() { return m_waiting; }
   ServiceWorker* active() { return m_active; }
+  NavigationPreloadManager* navigationPreload();
 
   String scope() const;
 
   WebServiceWorkerRegistration* webRegistration() {
     return m_handle->registration();
   }
 
   ScriptPromise update(ScriptState*);
   ScriptPromise unregister(ScriptState*);
 
@@ skipping 11 matching lines @@
 
   // ActiveDOMObject overrides.
   void contextDestroyed() override;
 
   // A handle to the registration representation in the embedder.
   std::unique_ptr<WebServiceWorkerRegistration::Handle> m_handle;
 
   Member<ServiceWorker> m_installing;
   Member<ServiceWorker> m_waiting;
   Member<ServiceWorker> m_active;
+  Member<NavigationPreloadManager> m_navigationPreload;
 
   bool m_stopped;
 };
 
 class ServiceWorkerRegistrationArray {
   STATIC_ONLY(ServiceWorkerRegistrationArray);
 
  public:
   static HeapVector<Member<ServiceWorkerRegistration>> take(
       ScriptPromiseResolver* resolver,
       Vector<std::unique_ptr<WebServiceWorkerRegistration::Handle>>*
           webServiceWorkerRegistrations) {
     HeapVector<Member<ServiceWorkerRegistration>> registrations;
     for (auto& registration : *webServiceWorkerRegistrations)
       registrations.append(ServiceWorkerRegistration::getOrCreate(
           resolver->getExecutionContext(), std::move(registration)));
     return registrations;
   }
 };
 
 }  // namespace blink
 
 #endif  // ServiceWorkerRegistration_h