Provide a callback for Component Updater OnDemand calls.

components/component_updater/component_updater_service_internal.h

 // Copyright 2015 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_COMPONENT_UPDATER_COMPONENT_UPDATER_SERVICE_INTERNAL_H_
 #define COMPONENTS_COMPONENT_UPDATER_COMPONENT_UPDATER_SERVICE_INTERNAL_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 38 matching lines @@
   void MaybeThrottle(const std::string& id,
                      const base::Closure& callback) override;
   scoped_refptr<base::SequencedTaskRunner> GetSequencedTaskRunner() override;
   bool GetComponentDetails(const std::string& id,
                            CrxUpdateItem* item) const override;
 
   // Overrides for Observer.
   void OnEvent(Events event, const std::string& id) override;
 
   // Overrides for OnDemandUpdater.
-  bool OnDemandUpdate(const std::string& id) override;
+  void OnDemandUpdate(const std::string& id,
+                      CompletionCallback callback) override;
 
  private:
   void Start();
   void Stop();
 
   bool CheckForUpdates();
 
-  bool OnDemandUpdateInternal(const std::string& id);
+  void OnDemandUpdateInternal(const std::string& id,
+                              CompletionCallback callback);
   bool OnDemandUpdateWithCooldown(const std::string& id);
 
   bool DoUnregisterComponent(const CrxComponent& component);
 
   const CrxComponent* GetComponent(const std::string& id) const;
 
   const CrxUpdateItem* GetComponentState(const std::string& id) const;
 
   void OnUpdate(const std::vector<std::string>& ids,
                 std::vector<CrxComponent>* components);
-  void OnUpdateComplete(const base::TimeTicks& start_time, int error);
+  void OnUpdateComplete(CompletionCallback callback,
+                        const base::TimeTicks& start_time,
+                        int error);
 
   base::ThreadChecker thread_checker_;
 
   scoped_refptr<Configurator> config_;
 
   scoped_refptr<UpdateClient> update_client_;
 
   Timer timer_;
 
   // A collection of every registered component.
@@ skipping 26 matching lines @@
   std::map<std::string, std::string> component_ids_by_mime_type_;
 
   scoped_refptr<base::SequencedTaskRunner> blocking_task_runner_;
 
   DISALLOW_COPY_AND_ASSIGN(CrxUpdateService);
 };
 
 }  // namespace component_updater
 
 #endif  // COMPONENTS_COMPONENT_UPDATER_COMPONENT_UPDATER_SERVICE_INTERNAL_H_