Implement FetchEvent.navigationPreload

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

Index: third_party/WebKit/Source/modules/serviceworkers/FetchEvent.h
diff --git a/third_party/WebKit/Source/modules/serviceworkers/FetchEvent.h b/third_party/WebKit/Source/modules/serviceworkers/FetchEvent.h
index 98e7c440390a4af4310e155e1c9a1e787e4c4409..6c3ab85ffa44346cc8e0c090ba1fd4334089500e 100644
--- a/third_party/WebKit/Source/modules/serviceworkers/FetchEvent.h
+++ b/third_party/WebKit/Source/modules/serviceworkers/FetchEvent.h
@@ -6,6 +6,7 @@
 #define FetchEvent_h
 
 #include "bindings/core/v8/ScriptPromise.h"
+#include "bindings/core/v8/ScriptPromiseProperty.h"
 #include "modules/EventModules.h"
 #include "modules/ModulesExport.h"
 #include "modules/fetch/Request.h"
@@ -14,11 +15,13 @@
 #include "modules/serviceworkers/RespondWithObserver.h"
 #include "modules/serviceworkers/WaitUntilObserver.h"
 #include "platform/heap/Handle.h"
+#include "public/platform/modules/serviceworker/WebServiceWorkerPreloadResponseCallbacks.h"
 
 namespace blink {
 
 class ExceptionState;
 class Request;
+class Response;
 class RespondWithObserver;
 
 // A fetch event is dispatched by the client to a service worker's script
@@ -28,6 +31,10 @@ class MODULES_EXPORT FetchEvent final : public ExtendableEvent {
   DEFINE_WRAPPERTYPEINFO();
 
  public:
+  typedef ScriptPromiseProperty<Member<FetchEvent>,
+                                Member<Response>,
+                                Member<DOMException>>
+      PreloadResponseProperty;
   static FetchEvent* create(ScriptState*,
                             const AtomicString& type,
                             const FetchEventInit&);
@@ -35,13 +42,18 @@ class MODULES_EXPORT FetchEvent final : public ExtendableEvent {
                             const AtomicString& type,
                             const FetchEventInit&,
                             RespondWithObserver*,
-                            WaitUntilObserver*);
+                            WaitUntilObserver*,
+                            bool navigationPreloadSent);
 
   Request* request() const;
   String clientId() const;
   bool isReload() const;
 
   void respondWith(ScriptState*, ScriptPromise, ExceptionState&);
+  ScriptPromise navigationPreload(ScriptState*, bool& isNull);
+
+  std::unique_ptr<WebServiceWorkerPreloadResponseCallbacks>
+  createPreloadResponseCallback(ScriptState*);
 
   const AtomicString& interfaceName() const override;
 
@@ -52,11 +64,15 @@ class MODULES_EXPORT FetchEvent final : public ExtendableEvent {
              const AtomicString& type,
              const FetchEventInit&,
              RespondWithObserver*,
-             WaitUntilObserver*);
+             WaitUntilObserver*,
+             bool navigationPreloadSent);
 
  private:
+  class PreloadResponseCallbackImpl;
+
   Member<RespondWithObserver> m_observer;
   Member<Request> m_request;
+  Member<PreloadResponseProperty> m_navigationPreloadProperty;
   String m_clientId;
   bool m_isReload;
 };