Unregister with push service and SW database when permission is lost.

content/public/browser/push_messaging_service.h

 // Copyright 2014 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_PUBLIC_BROWSER_PUSH_MESSAGING_SERVICE_H_
 #define CONTENT_PUBLIC_BROWSER_PUSH_MESSAGING_SERVICE_H_
 
 #include <string>
 
 #include "base/callback.h"
 #include "content/common/content_export.h"
 #include "content/public/common/push_messaging_status.h"
 #include "third_party/WebKit/public/platform/modules/push_messaging/WebPushPermissionStatus.h"
 #include "url/gurl.h"
 
 namespace content {
 
+class BrowserContext;
 class ServiceWorkerContext;
 
 // A push service-agnostic interface that the Push API uses for talking to
 // push messaging services like GCM. Must only be used on the UI thread.
 class CONTENT_EXPORT PushMessagingService {
  public:
   using GetNotificationsShownCallback =
       base::Callback<void(const std::string& notifications_shown,
                           bool success, bool not_found)>;
 
   using ResultCallback = base::Callback<void(bool success)>;
 
   using RegisterCallback =
       base::Callback<void(const std::string& /* registration_id */,
                           PushRegistrationStatus /* status */)>;
   using UnregisterCallback = base::Callback<void(PushUnregistrationStatus)>;
 
-  // Provide a storage mechanism to read/write an opaque
-  // "notifications_shown_by_last_few_pushes" string associated with a Service
-  // Worker registration. Stored data is deleted when the associated
-  // registration is deleted.
-  static void GetNotificationsShownByLastFewPushes(
-      ServiceWorkerContext* service_worker_context,
-      int64 service_worker_registration_id,
-      const GetNotificationsShownCallback& callback);
-  static void SetNotificationsShownByLastFewPushes(
-      ServiceWorkerContext* service_worker_context,
-      int64 service_worker_registration_id,
-      const GURL& origin,
-      const std::string& notifications_shown,
-      const ResultCallback& callback);
-
   virtual ~PushMessagingService() {}
 
   // Returns the absolute URL exposed by the push server where the webapp server
   // can send push messages. This is currently assumed to be the same for all
   // origins and push registrations.
   virtual GURL GetPushEndpoint() = 0;
 
   // Register the given |sender_id| with the push messaging service in a
   // document context. The frame is known and a permission UI may be displayed
   // to the user.
@@ skipping 19 matching lines @@
                           int64 service_worker_registration_id,
                           bool retry_on_failure,
                           const UnregisterCallback& callback) = 0;
 
   // Checks the permission status for the requesting origin. Permission is only
   // ever granted when the requesting origin matches the top level embedding
   // origin.
   virtual blink::WebPushPermissionStatus GetPermissionStatus(
       const GURL& requesting_origin,
       const GURL& embedding_origin) = 0;
+
+ protected:
+  // Provide a storage mechanism to read/write an opaque
+  // "notifications_shown_by_last_few_pushes" string associated with a Service
+  // Worker registration. Stored data is deleted when the associated
+  // registration is deleted.
+  static void GetNotificationsShownByLastFewPushes(
+      ServiceWorkerContext* service_worker_context,
+      int64 service_worker_registration_id,
+      const GetNotificationsShownCallback& callback);
+  static void SetNotificationsShownByLastFewPushes(
+      ServiceWorkerContext* service_worker_context,
+      int64 service_worker_registration_id,
+      const GURL& origin,
+      const std::string& notifications_shown,
+      const ResultCallback& callback);
+
+  // Clear the push registration id stored in the service worker with the given
+  // |service_worker_registration_id| for the given |origin|.
+  static void ClearPushRegistrationID(BrowserContext* browser_context,
+                                      const GURL& origin,
+                                      int64 service_worker_registration_id);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_PUSH_MESSAGING_SERVICE_H_