Linux Aura: Fixes and improvements for cursor loader

ui/views/widget/desktop_aura/desktop_cursor_loader_updater_auralinux.h

-// Copyright 2013 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_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_CURSOR_LOADER_UPDATER_AURALINUX_H_
-#define UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_CURSOR_LOADER_UPDATER_AURALINUX_H_
-
-#include "base/compiler_specific.h"
-#include "ui/views/widget/desktop_aura/desktop_cursor_loader_updater.h"
-
-namespace views {
-
-// Loads the subset of aura cursors that X11 doesn't provide.
-class DesktopCursorLoaderUpdaterAuraLinux : public DesktopCursorLoaderUpdater {
- public:
-  DesktopCursorLoaderUpdaterAuraLinux();
-  ~DesktopCursorLoaderUpdaterAuraLinux() override;
-
-  // Overridden from DesktopCursorLoaderUpdater:
-  void OnCreate(float device_scale_factor, ui::CursorLoader* loader) override;
-  void OnDisplayUpdated(const display::Display& display,
-                        ui::CursorLoader* loader) override;
-};
-
-}  // namespace views
-
-#endif  // UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_DISPLAY_CHANGE_HANDLER_AURALINUX_H_