ServiceWorker: Add support for .skipWaiting and controllerchange event(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 28 matching lines @@
     virtual void OnVersionAttributesChanged(
         ServiceWorkerRegistration* registration,
         ChangedVersionAttributesMask changed_mask,
         const ServiceWorkerRegistrationInfo& info) {}
     virtual void OnRegistrationFailed(
         ServiceWorkerRegistration* registration) {}
     virtual void OnRegistrationFinishedUninstalling(
         ServiceWorkerRegistration* registration) {}
     virtual void OnUpdateFound(
         ServiceWorkerRegistration* registration) {}
+    virtual void OnSkippedWaiting(ServiceWorkerRegistration* registation) {}
   };
 
   ServiceWorkerRegistration(const GURL& pattern,
                             int64 registration_id,
                             base::WeakPtr<ServiceWorkerContextCore> context);
 
   int64 id() const { return registration_id_; }
   const GURL& pattern() const { return pattern_; }
 
   bool is_deleted() const { return is_deleted_; }
@@ skipping 38 matching lines @@
   void SetWaitingVersion(ServiceWorkerVersion* version);
   void SetInstallingVersion(ServiceWorkerVersion* version);
 
   // If version is the installing, waiting, active version of this
   // 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, activation is initiated immediately.
+  // is called or when version's skip waiting flag is set, activation is
+  // initiated immediately.
   void ActivateWaitingVersionWhenReady();
 
   // 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);
@@ skipping 56 matching lines @@
   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_