Revert of chromeos: adds TouchDeviceServer and wires up in mushrome

ash/mus/touch_transform_setter_mus.h

-// Copyright 2017 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 ASH_MUS_TOUCH_TRANSFORM_SETTER_MUS_H_
-#define ASH_MUS_TOUCH_TRANSFORM_SETTER_MUS_H_
-
-#include "base/macros.h"
-#include "services/ui/public/interfaces/input_devices/touch_device_server.mojom.h"
-#include "ui/display/manager/chromeos/touch_transform_setter.h"
-
-namespace service_manager {
-class Connector;
-}
-
-namespace ash {
-
-// display::TouchTransformSetter implementation for mus. Updates are applied
-// by way of ui::mojom::TouchDeviceServer.
-class TouchTransformSetterMus : public display::TouchTransformSetter {
- public:
-  explicit TouchTransformSetterMus(service_manager::Connector* connector);
-  ~TouchTransformSetterMus() override;
-
-  // TouchTransformSetter:
-  void ConfigureTouchDevices(
-      const std::map<int32_t, double>& scales,
-      const std::vector<display::TouchDeviceTransform>& transforms) override;
-
- private:
-  ui::mojom::TouchDeviceServerPtr touch_device_server_;
-
-  DISALLOW_COPY_AND_ASSIGN(TouchTransformSetterMus);
-};
-
-}  // namespace ash
-
-#endif  // ASH_MUS_TOUCH_TRANSFORM_SETTER_MUS_H_