ServiceWorker: add ServiceWorkerClients.claim() support (2/3).

content/browser/service_worker/service_worker_registration.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_REGISTRATION_H_
 #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_REGISTRATION_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 91 matching lines @@
   // registation, the method will reset that field to NULL, and notify
   // listeners via OnVersionAttributesChanged.
   void UnsetVersion(ServiceWorkerVersion* version);
 
   // Triggers the [[Activate]] algorithm when the currently active version
   // has no controllees. If there are no controllees at the time the method
   // is called or when version's skip waiting flag is set, activation is
   // initiated immediately.
   void ActivateWaitingVersionWhenReady();
 
+  // Takes over control of provider hosts which are currently not controlled or
+  // controlled by other registrations.
+  void ClaimClients(const StatusCallback& callback);
+
   // Triggers the [[ClearRegistration]] algorithm when the currently
   // active version has no controllees. Deletes this registration
   // from storage immediately.
   void ClearWhenReady();
 
   // Restores this registration in storage and cancels the pending
   // [[ClearRegistration]] algorithm.
   void AbortPendingClear(const StatusCallback& callback);
 
   // The time of the most recent update check.
@@ skipping 34 matching lines @@
       ServiceWorkerStatusCode status);
   void OnDeleteFinished(ServiceWorkerStatusCode status);
 
   // This method corresponds to the [[ClearRegistration]] algorithm.
   void Clear();
 
   void OnRestoreFinished(const StatusCallback& callback,
                          scoped_refptr<ServiceWorkerVersion> version,
                          ServiceWorkerStatusCode status);
 
+  void DidGetRegistrationsForClaimClients(
+      const StatusCallback& callback,
+      scoped_refptr<ServiceWorkerVersion> version,
+      const std::vector<ServiceWorkerRegistrationInfo>& registrations);
+  bool ShouldClaim(
+      ServiceWorkerProviderHost* provider_host,
+      const std::vector<ServiceWorkerRegistrationInfo>& registration_infos);
+
   const GURL pattern_;
   const int64 registration_id_;
   bool is_deleted_;
   bool is_uninstalling_;
   bool is_uninstalled_;
   bool should_activate_when_ready_;
   base::Time last_update_check_;
   int64_t resources_total_size_bytes_;
   scoped_refptr<ServiceWorkerVersion> active_version_;
   scoped_refptr<ServiceWorkerVersion> waiting_version_;
   scoped_refptr<ServiceWorkerVersion> installing_version_;
   ObserverList<Listener> listeners_;
   base::WeakPtr<ServiceWorkerContextCore> context_;
 
   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerRegistration);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_REGISTRATION_H_