Implement a permission check for push.

chrome/browser/services/gcm/push_messaging_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_SERVICES_GCM_PUSH_MESSAGING_SERVICE_IMPL_H_
 #define CHROME_BROWSER_SERVICES_GCM_PUSH_MESSAGING_SERVICE_IMPL_H_
 
 #include "base/compiler_specific.h"
 #include "base/memory/weak_ptr.h"
 #include "components/gcm_driver/gcm_app_handler.h"
@@ skipping 30 matching lines @@
   virtual void OnMessagesDeleted(const std::string& app_id) OVERRIDE;
   virtual void OnSendError(
       const std::string& app_id,
       const GCMClient::SendErrorDetails& send_error_details) OVERRIDE;
   virtual bool CanHandle(const std::string& app_id) const OVERRIDE;
 
   // content::PushMessagingService implementation:
   virtual void Register(
       const std::string& app_id,
       const std::string& sender_id,
+      const int renderer_id,
+      const int router_id,
       const content::PushMessagingService::RegisterCallback& callback) OVERRIDE;
 
  private:
   void DidRegister(
       const std::string& app_id,
       const content::PushMessagingService::RegisterCallback& callback,
       const std::string& registration_id,
       GCMClient::Result result);
 
+  void DidRequestPermission(
+      const std::string& sender_id,
+      const std::string& app_id,
+      const content::PushMessagingService::RegisterCallback& callback,
+      bool allow);
+
   GCMProfileService* gcm_profile_service_;  // It owns us.
 
   Profile* profile_;  // It owns our owner.
 
   base::WeakPtrFactory<PushMessagingServiceImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PushMessagingServiceImpl);
 };
 
 }  // namespace gcm
 
 #endif  // CHROME_BROWSER_SERVICES_GCM_PUSH_MESSAGING_SERVICE_IMPL_H_