Introduce new content APIs for persistent notifications.

chrome/browser/notifications/platform_notification_service_impl.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 CHROME_BROWSER_NOTIFICATIONS_PLATFORM_NOTIFICATION_SERVICE_IMPL_H_
 #define CHROME_BROWSER_NOTIFICATIONS_PLATFORM_NOTIFICATION_SERVICE_IMPL_H_
 
 #include "base/memory/singleton.h"
 #include "content/public/browser/platform_notification_service.h"
 
@@ skipping 10 matching lines @@
   blink::WebNotificationPermission CheckPermission(
       content::ResourceContext* resource_context,
       const GURL& origin,
       int render_process_id) override;;
   void DisplayNotification(
       content::BrowserContext* browser_context,
       const content::ShowDesktopNotificationHostMsgParams& params,
       scoped_ptr<content::DesktopNotificationDelegate> delegate,
       int render_process_id,
       base::Closure* cancel_callback) override;
+  void DisplayPersistentNotification(
+      content::BrowserContext* browser_context,
+      int64 service_worker_registration_id,
+      const content::ShowDesktopNotificationHostMsgParams& params,
+      int render_process_id) override;
+  void ClosePersistentNotification(
+      content::BrowserContext* browser_context,
+      const std::string& persistent_notification_id) override;
 
  private:
   friend struct DefaultSingletonTraits<PlatformNotificationServiceImpl>;
 
   PlatformNotificationServiceImpl();
   ~PlatformNotificationServiceImpl() override;
 };
 
 #endif  // CHROME_BROWSER_NOTIFICATIONS_PLATFORM_NOTIFICATION_SERVICE_IMPL_H_