Delete geofencing implementation.

content/browser/geofencing/geofencing_registration_delegate.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_BROWSER_GEOFENCING_GEOFENCING_REGISTRATION_DELEGATE_H_
-#define CONTENT_BROWSER_GEOFENCING_GEOFENCING_REGISTRATION_DELEGATE_H_
-
-#include <stdint.h>
-
-#include "content/common/geofencing_types.h"
-
-namespace content {
-
-// |GeofencingService| has an instance of this class associated with each
-// geofence registration, and uses it to inform about events related to the
-// registration, such as the geofence finishing being registered.
-// These methods will always be called on the IO thread.
-// TODO(mek): Add methods for geofence enter/leave events.
-class GeofencingRegistrationDelegate {
- public:
-  virtual void RegistrationFinished(int64_t geofencing_registration_id,
-                                    GeofencingStatus status) = 0;
-  virtual void RegionEntered(int64_t geofencing_registration_id) = 0;
-  virtual void RegionExited(int64_t geofencing_registration_id) = 0;
-
- protected:
-  virtual ~GeofencingRegistrationDelegate() {}
-};
-
-}  // namespace content
-
-#endif  // CONTENT_BROWSER_GEOFENCING_GEOFENCING_REGISTRATION_DELEGATE_H_