It is time.

ui/events/ozone/device/device_manager_manual.h

Index: ui/events/ozone/device/device_manager_manual.h
diff --git a/ui/events/ozone/device/device_manager_manual.h b/ui/events/ozone/device/device_manager_manual.h
deleted file mode 100644
index 91047746acbe6eaa2dec72b8abc0b3a2fe1d8766..0000000000000000000000000000000000000000
--- a/ui/events/ozone/device/device_manager_manual.h
+++ /dev/null
@@ -1,29 +0,0 @@
-// 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 UI_EVENTS_OZONE_DEVICE_DEVICE_MANAGER_MANUAL_H_
-#define UI_EVENTS_OZONE_DEVICE_DEVICE_MANAGER_MANUAL_H_
-
-#include "base/macros.h"
-#include "ui/events/ozone/device/device_manager.h"
-
-namespace ui {
-
-class DeviceManagerManual : public DeviceManager {
- public:
-  DeviceManagerManual();
-  virtual ~DeviceManagerManual();
-
- private:
-  // DeviceManager overrides:
-  virtual void ScanDevices(DeviceEventObserver* observer) override;
-  virtual void AddObserver(DeviceEventObserver* observer) override;
-  virtual void RemoveObserver(DeviceEventObserver* observer) override;
-
-  DISALLOW_COPY_AND_ASSIGN(DeviceManagerManual);
-};
-
-}  // namespace ui
-
-#endif  // UI_EVENTS_OZONE_DEVICE_DEVICE_MANAGER_MANUAL_H_