Revert 138212 - Implement High Contrast mode for Chrome OS.

ash/high_contrast/high_contrast_controller.h

-// Copyright (c) 2012 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_HIGH_CONTRAST_HIGH_CONTRAST_CONTROLLER_H_
-#define ASH_HIGH_CONTRAST_HIGH_CONTRAST_CONTROLLER_H_
-#pragma once
-
-#include "ash/ash_export.h"
-#include "base/basictypes.h"
-
-namespace aura {
-class RootWindow;
-}
-
-namespace ash {
-
-class ASH_EXPORT HighContrastController {
- public:
-  HighContrastController();
-
-  ~HighContrastController() {}
-
-  void SetEnabled(bool enabled);
-
- private:
-  aura::RootWindow* root_window_;
-
-  bool enabled_;
-
-  DISALLOW_COPY_AND_ASSIGN(HighContrastController);
-};
-
-}  // namespace ash
-
-#endif  // ASH_HIGH_CONTRAST_HIGH_CONTRAST_CONTROLLER_H_