service worker: navigation preload basic setters/getters and flag

content/browser/service_worker/service_worker_version.h

 // Copyright 2013 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 CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_VERSION_H_
 #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_VERSION_H_
 
 #include <stdint.h>
 
 #include <functional>
@@ skipping 153 matching lines @@
 
   const std::vector<url::Origin>& foreign_fetch_origins() const {
     return foreign_fetch_origins_;
   }
   void set_foreign_fetch_origins(const std::vector<url::Origin>& origins) {
     foreign_fetch_origins_ = origins;
   }
 
   ServiceWorkerMetrics::Site site_for_uma() const { return site_for_uma_; }
 
+  void set_navigation_preload_enabled(bool enabled, const std::string& value) {
+    is_navigation_preload_enabled_ = enabled;
+    if (is_navigation_preload_enabled_)
+      navigation_preload_value_ = value;
+    else
+      navigation_preload_value_ = std::string();
+  }
+
+  bool is_navigation_preload_enabled() const {
+    return is_navigation_preload_enabled_;
+  }
+  const std::string& navigation_preload_value() const {
+    DCHECK(is_navigation_preload_enabled_);
+    return navigation_preload_value_;
+  }
+
   // This sets the new status and also run status change callbacks
   // if there're any (see RegisterStatusChangeCallback).
   void SetStatus(Status status);
 
   // Registers status change callback. (This is for one-off observation,
   // the consumer needs to re-register if it wants to continue observing
   // status changes)
   void RegisterStatusChangeCallback(const base::Closure& callback);
 
   // Starts an embedded worker for this version.
@@ skipping 571 matching lines @@
   std::unique_ptr<PingController> ping_controller_;
   std::unique_ptr<Metrics> metrics_;
   const bool should_exclude_from_uma_ = false;
 
   bool stop_when_devtools_detached_ = false;
 
   // Keeps the first purpose of starting the worker for UMA. Cleared in
   // FinishStartWorker().
   base::Optional<ServiceWorkerMetrics::EventType> start_worker_first_purpose_;
 
+  bool is_navigation_preload_enabled_ = false;
+  std::string navigation_preload_value_;
+
   base::WeakPtrFactory<ServiceWorkerVersion> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerVersion);
 };
 
 template <typename Interface>
 base::WeakPtr<Interface> ServiceWorkerVersion::GetMojoServiceForRequest(
     int request_id) {
   DCHECK_EQ(EmbeddedWorkerStatus::RUNNING, running_status());
   PendingRequest* request = pending_requests_.Lookup(request_id);
@@ skipping 63 matching lines @@
 
   // At this point |this| can have been deleted, so don't do anything other
   // than returning.
 
   return true;
 }
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_VERSION_H_