Revert of Changes look for scrollbars on windows

ui/native_theme/native_theme_aurawin.h

-// Copyright (c) 2014 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_NATIVE_THEME_NATIVE_THEME_AURAWIN_H_
-#define UI_NATIVE_THEME_NATIVE_THEME_AURAWIN_H_
-
-#include "base/basictypes.h"
-#include "base/compiler_specific.h"
-#include "ui/native_theme/native_theme_aura.h"
-
-namespace gfx {
-class NineImagePainter;
-}
-
-namespace ui {
-
-// Aura implementation of native theme support.
-class NATIVE_THEME_EXPORT NativeThemeAuraWin : public NativeThemeAura {
- public:
-  static NativeThemeAuraWin* instance();
-
- private:
-  NativeThemeAuraWin();
-  virtual ~NativeThemeAuraWin();
-
-  // Overridden from NativeThemeBase:
-  virtual gfx::Size GetPartSize(Part part,
-                                State state,
-                                const ExtraParams& extra) const OVERRIDE;
-  virtual void PaintArrowButton(SkCanvas* gc,
-                                const gfx::Rect& rect,
-                                Part direction,
-                                State state) const OVERRIDE;
-  virtual void PaintScrollbarTrack(
-      SkCanvas* sk_canvas,
-      Part part,
-      State state,
-      const ScrollbarTrackExtraParams& extra_params,
-      const gfx::Rect& rect) const OVERRIDE;
-  virtual void PaintScrollbarThumb(SkCanvas* sk_canvas,
-                                   Part part,
-                                   State state,
-                                   const gfx::Rect& rect) const OVERRIDE;
-
-  // Returns the NineImagePainter used to paint the specified state, creating if
-  // necessary. If no image is provided for the specified state the normal state
-  // images are used.
-  gfx::NineImagePainter* GetOrCreatePainter(
-      const int image_ids[kMaxState][9],
-      State state,
-      scoped_ptr<gfx::NineImagePainter> painters[kMaxState]) const;
-
-  // Paints |painter| into the canvas using |rect|.
-  void PaintPainter(gfx::NineImagePainter* painter,
-                    SkCanvas* sk_canvas,
-                    const gfx::Rect& rect) const;
-
-  mutable scoped_ptr<gfx::NineImagePainter> scrollbar_track_painter_;
-
-  mutable scoped_ptr<gfx::NineImagePainter>
-      scrollbar_thumb_painters_[kMaxState];
-
-  mutable scoped_ptr<gfx::NineImagePainter>
-      scrollbar_arrow_button_painters_[kMaxState];
-
-  DISALLOW_COPY_AND_ASSIGN(NativeThemeAuraWin);
-};
-
-}  // namespace ui
-
-#endif  // UI_NATIVE_THEME_NATIVE_THEME_AURAWIN_H_