[Doodle] Pull time_to_live out of DoodleConfig

components/doodle/doodle_service.h

 // Copyright 2017 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 COMPONENTS_DOODLE_DOODLE_SERVICE_H_
 #define COMPONENTS_DOODLE_DOODLE_SERVICE_H_
 
 #include <memory>
 
 #include "base/macros.h"
 #include "base/observer_list.h"
 #include "base/optional.h"
 #include "components/doodle/doodle_fetcher.h"
 #include "components/doodle/doodle_types.h"
 
+namespace base {
+class TimeDelta;
+}
+
 namespace doodle {
 
 class DoodleService {
  public:
   class Observer {
    public:
     virtual void OnDoodleConfigUpdated(const base::Optional<DoodleConfig>&) = 0;
   };
 
   DoodleService(std::unique_ptr<DoodleFetcher> fetcher);
@@ skipping 10 matching lines @@
   // even when the observer is being notified of an update.
   void RemoveObserver(Observer* observer);
 
   // Requests an asynchronous refresh of the DoodleConfig from the network.
   // After the update completes, the observers will be notified only if the
   // config changed.
   void Refresh();
 
  private:
   void DoodleFetched(DoodleState state,
+                     base::TimeDelta time_to_live,
                      const base::Optional<DoodleConfig>& doodle_config);
 
   // The fetcher for getting fresh DoodleConfigs from the network.
   std::unique_ptr<DoodleFetcher> fetcher_;
 
   // The result of the last network fetch.
   base::Optional<DoodleConfig> cached_config_;
 
   // The list of observers to be notified when the DoodleConfig changes.
   base::ObserverList<Observer> observers_;
 
   DISALLOW_COPY_AND_ASSIGN(DoodleService);
 };
 
 }  // namespace doodle
 
 #endif  // COMPONENTS_DOODLE_DOODLE_SERVICE_H_