chromeos: moves setting of touch state to a separate class

ash/touch/ash_touch_transform_controller.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_TOUCH_ASH_TOUCH_TRANSFORM_CONTROLLER_H_
 #define ASH_TOUCH_ASH_TOUCH_TRANSFORM_CONTROLLER_H_
 
 #include "ash/ash_export.h"
 #include "ash/display/window_tree_host_manager.h"
 #include "base/macros.h"
 #include "ui/display/manager/chromeos/touch_transform_controller.h"
 
 namespace display {
 class DisplayConfigurator;
 class DisplayManager;
 }
 
 namespace ash {
 
 // AshTouchTransformController listens for display configuration changes and
 // updates the touch transforms when one occurs.
 class ASH_EXPORT AshTouchTransformController
     : public display::TouchTransformController,
       public WindowTreeHostManager::Observer {
  public:
   AshTouchTransformController(
       display::DisplayConfigurator* display_configurator,
-      display::DisplayManager* display_manager);
+      display::DisplayManager* display_manager,
+      std::unique_ptr<display::TouchTransformSetter> setter);
   ~AshTouchTransformController() override;
 
   // WindowTreeHostManager::Observer:
   void OnDisplaysInitialized() override;
   void OnDisplayConfigurationChanged() override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(AshTouchTransformController);
 };
 
 }  // namespace ash
 
 #endif  // ASH_TOUCH_ASH_TOUCH_TRANSFORM_CONTROLLER_H_