| Index: components/gcm_driver/gcm_client_impl.h | 
| diff --git a/components/gcm_driver/gcm_client_impl.h b/components/gcm_driver/gcm_client_impl.h | 
| index 9e102154b86b20e1cbe8c7ac5d81432a36087b1f..62c4d3b530fe33213e15a45009954c7692c70c64 100644 | 
| --- a/components/gcm_driver/gcm_client_impl.h | 
| +++ b/components/gcm_driver/gcm_client_impl.h | 
| @@ -116,6 +116,9 @@ class GCMClientImpl | 
| void Start(StartMode start_mode) override; | 
| void Stop() override; | 
| void Register(const linked_ptr<RegistrationInfo>& registration_info) override; | 
| +  bool ValidateRegistration( | 
| +      const linked_ptr<RegistrationInfo>& registration_info, | 
| +      const std::string& registration_id) override; | 
| void Unregister( | 
| const linked_ptr<RegistrationInfo>& registration_info) override; | 
| void Send(const std::string& app_id, | 
|  |