Revert of ash: Refactor touch hud drawing to ash/touch_hud.

ash/touch_hud/touch_hud_renderer.h

-// Copyright 2016 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_HUD_TOUCH_HUD_RENDERER_H_
-#define ASH_TOUCH_HUD_TOUCH_HUD_RENDERER_H_
-
-#include <map>
-
-#include "ash/touch_hud/ash_touch_hud_export.h"
-#include "base/macros.h"
-
-namespace ui {
-class LocatedEvent;
-}
-
-namespace views {
-class Widget;
-}
-
-namespace ash {
-class TouchHudProjectionTest;
-class TouchPointView;
-
-// Handles touch events to draw out touch points accordingly.
-class ASH_TOUCH_HUD_EXPORT TouchHudRenderer {
- public:
-  explicit TouchHudRenderer(views::Widget* parent_widget);
-  ~TouchHudRenderer();
-
-  // Called to clear touch points and traces from the screen.
-  void Clear();
-
-  // Receives a touch event and draws its touch point.
-  void HandleTouchEvent(const ui::LocatedEvent& event);
-
- private:
-  friend class TouchHudProjectionTest;
-
-  // The parent widget that all touch points would be drawn in.
-  views::Widget* parent_widget_;
-
-  // A map of touch ids to TouchPointView.
-  std::map<int, TouchPointView*> points_;
-
-  DISALLOW_COPY_AND_ASSIGN(TouchHudRenderer);
-};
-
-}  // namespace ash
-
-#endif  // ASH_TOUCH_HUD_TOUCH_HUD_RENDERER_H_