service worker: navigation preload basic setters/getters and flag

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

Index: third_party/WebKit/Source/modules/serviceworkers/ServiceWorker.h
diff --git a/third_party/WebKit/Source/modules/serviceworkers/ServiceWorker.h b/third_party/WebKit/Source/modules/serviceworkers/ServiceWorker.h
index 2066333d4a62d32fb0733b4cead947f7f8e0b41e..752f35167a145c0a97712793d0e05c11ace51633 100644
--- a/third_party/WebKit/Source/modules/serviceworkers/ServiceWorker.h
+++ b/third_party/WebKit/Source/modules/serviceworkers/ServiceWorker.h
@@ -43,6 +43,7 @@
 
 namespace blink {
 
+class NavigationPreloadOptions;
 class ScriptPromiseResolver;
 
 class MODULES_EXPORT ServiceWorker final : public AbstractWorker,
@@ -81,6 +82,10 @@ class MODULES_EXPORT ServiceWorker final : public AbstractWorker,
 
   void internalsTerminate();
 
+  ScriptPromise setNavigationPreload(ScriptState*,
+                                     const NavigationPreloadOptions&);
+  ScriptPromise getNavigationPreload(ScriptState*);
+
  private:
   static ServiceWorker* getOrCreate(ExecutionContext*,
                                     std::unique_ptr<WebServiceWorker::Handle>);