ServiceWorker: Make SWProviderHost listen to SWRegistration

content/browser/service_worker/service_worker_registration.h

Index: content/browser/service_worker/service_worker_registration.h
diff --git a/content/browser/service_worker/service_worker_registration.h b/content/browser/service_worker/service_worker_registration.h
index 41092889e74c4396711d5d829d02a63bbfbf0645..d2dbd92b8c3d67c95b6c7d83edbced25eaec55e2 100644
--- a/content/browser/service_worker/service_worker_registration.h
+++ b/content/browser/service_worker/service_worker_registration.h
@@ -36,7 +36,9 @@ class CONTENT_EXPORT ServiceWorkerRegistration
     virtual void OnVersionAttributesChanged(
         ServiceWorkerRegistration* registration,
         ChangedVersionAttributesMask changed_mask,
-        const ServiceWorkerRegistrationInfo& info)  = 0;
+        const ServiceWorkerRegistrationInfo& info) = 0;
+    virtual void OnRegistrationDeleted(
+        ServiceWorkerRegistration* registration) = 0;
   };
 
   ServiceWorkerRegistration(const GURL& pattern,
@@ -82,8 +84,10 @@ class CONTENT_EXPORT ServiceWorkerRegistration
   // is called, activation is initiated immediately.
   void ActivateWaitingVersionWhenReady();
 
+  // Sets |is_deleted_| and notify listeners via OnRegistrationDeleted.
+  void SetIsDeleted();
+
   bool is_deleted() const { return is_deleted_; }
-  void set_is_deleted() { is_deleted_ = true; }
 
  private:
   friend class base::RefCounted<ServiceWorkerRegistration>;