[Sensors] Remove SensorReading interfaces

third_party/WebKit/Source/modules/sensor/MagnetometerReading.h

-// Copyright 2016 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 MagnetometerReading_h
-#define MagnetometerReading_h
-
-#include "modules/sensor/SensorReading.h"
-
-namespace blink {
-
-class MagnetometerReadingInit;
-
-class MagnetometerReading final : public SensorReading {
-  DEFINE_WRAPPERTYPEINFO();
-
- public:
-  static MagnetometerReading* create(const MagnetometerReadingInit& init) {
-    return new MagnetometerReading(init);
-  }
-
-  static MagnetometerReading* create(const device::SensorReading& data) {
-    return new MagnetometerReading(data);
-  }
-
-  ~MagnetometerReading() override;
-
-  double x() const;
-  double y() const;
-  double z() const;
-
-  bool isReadingUpdated(const device::SensorReading&) const override;
-
-  DECLARE_VIRTUAL_TRACE();
-
- private:
-  explicit MagnetometerReading(const MagnetometerReadingInit&);
-  explicit MagnetometerReading(const device::SensorReading&);
-};
-
-}  // namepsace blink
-
-#endif  // MagnetometerReading_h