Remove DeviceLightEvent implementation

third_party/WebKit/Source/modules/device_light/DeviceLightEvent.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 DeviceLightEvent_h
-#define DeviceLightEvent_h
-
-#include "modules/EventModules.h"
-#include "modules/device_light/DeviceLightEventInit.h"
-#include "platform/heap/Handle.h"
-
-namespace blink {
-
-class DeviceLightEvent final : public Event {
-  DEFINE_WRAPPERTYPEINFO();
-
- public:
-  ~DeviceLightEvent() override;
-
-  static DeviceLightEvent* Create(const AtomicString& event_type,
-                                  double value) {
-    return new DeviceLightEvent(event_type, value);
-  }
-  static DeviceLightEvent* Create(const AtomicString& event_type,
-                                  const DeviceLightEventInit& initializer) {
-    return new DeviceLightEvent(event_type, initializer);
-  }
-
-  double value() const { return value_; }
-
-  const AtomicString& InterfaceName() const override;
-
- private:
-  DeviceLightEvent(const AtomicString& event_type, double value);
-  DeviceLightEvent(const AtomicString& event_type,
-                   const DeviceLightEventInit& initializer);
-
-  double value_;
-};
-
-DEFINE_TYPE_CASTS(DeviceLightEvent,
-                  Event,
-                  event,
-                  event->InterfaceName() == EventNames::DeviceLightEvent,
-                  event.InterfaceName() == EventNames::DeviceLightEvent);
-
-}  // namespace blink
-
-#endif  // DeviceLightEvent_h