service worker: Add NavigationPreload runtime flag and skeleton interface

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

 /*
  * 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 18 matching lines @@
  */
 
 #include "modules/serviceworkers/ServiceWorker.h"
 
 #include "bindings/core/v8/ExceptionState.h"
 #include "core/dom/ExceptionCode.h"
 #include "core/dom/MessagePort.h"
 #include "core/events/Event.h"
 #include "core/inspector/ConsoleMessage.h"
 #include "modules/EventTargetModules.h"
+#include "modules/serviceworkers/NavigationPreloadOptions.h"
 #include "modules/serviceworkers/ServiceWorkerContainerClient.h"
 #include "public/platform/WebMessagePortChannel.h"
 #include "public/platform/WebSecurityOrigin.h"
 #include "public/platform/WebString.h"
 #include "public/platform/modules/serviceworker/WebServiceWorkerState.h"
 #include <memory>
 
 namespace blink {
 
 const AtomicString& ServiceWorker::interfaceName() const {
@@ skipping 66 matching lines @@
     case WebServiceWorkerStateActivated:
       return "activated";
     case WebServiceWorkerStateRedundant:
       return "redundant";
     default:
       ASSERT_NOT_REACHED();
       return nullAtom;
   }
 }
 
+ScriptPromise ServiceWorker::getNavigationPreload(ScriptState* scriptState) {
+  NOTIMPLEMENTED();
+  return ScriptPromise();
+}
+
+ScriptPromise ServiceWorker::setNavigationPreload(
+    ScriptState* scriptState,
+    const NavigationPreloadOptions& options) {
+  NOTIMPLEMENTED();
+  return ScriptPromise();
+}
+
 ServiceWorker* ServiceWorker::from(
     ExecutionContext* executionContext,
     std::unique_ptr<WebServiceWorker::Handle> handle) {
   return getOrCreate(executionContext, std::move(handle));
 }
 
 bool ServiceWorker::hasPendingActivity() const {
   if (m_wasStopped)
     return false;
   return m_handle->serviceWorker()->state() != WebServiceWorkerStateRedundant;
@@ skipping 32 matching lines @@
   m_handle->serviceWorker()->setProxy(this);
 }
 
 ServiceWorker::~ServiceWorker() {}
 
 DEFINE_TRACE(ServiceWorker) {
   AbstractWorker::trace(visitor);
 }
 
 }  // namespace blink