Remove NativeScrollBar*.

ui/views/controls/scrollbar/scroll_bar_views.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 UI_VIEWS_CONTROLS_SCROLLBAR_NATIVE_SCROLL_BAR_VIEWS_H_
-#define UI_VIEWS_CONTROLS_SCROLLBAR_NATIVE_SCROLL_BAR_VIEWS_H_
+#ifndef UI_VIEWS_CONTROLS_SCROLLBAR_SCROLL_BAR_VIEWS_H_
+#define UI_VIEWS_CONTROLS_SCROLLBAR_SCROLL_BAR_VIEWS_H_
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "ui/gfx/geometry/point.h"
 #include "ui/native_theme/native_theme.h"
 #include "ui/views/controls/button/button.h"
 #include "ui/views/controls/scrollbar/base_scroll_bar.h"
-#include "ui/views/controls/scrollbar/native_scroll_bar_wrapper.h"
 #include "ui/views/view.h"
 
 namespace gfx {
 class Canvas;
 }
 
 namespace views {
 
-class NativeScrollBar;
-
 // Views implementation for the scrollbar.
-class VIEWS_EXPORT NativeScrollBarViews : public BaseScrollBar,
-                                          public ButtonListener,
-                                          public NativeScrollBarWrapper {
+class VIEWS_EXPORT ScrollBarViews : public BaseScrollBar,

[sky, 2016/11/07 16:22:55]

optional: name this ScrollBar (the Views name is no longer meaningful and
redundant with the package).

[Evan Stade, 2016/11/07 17:10:00]

yea, this name isn't great, but ScrollBar is already taken :~(

+                                    public ButtonListener {
  public:
   static const char kViewClassName[];
 
   // Creates new scrollbar, either horizontal or vertical.
-  explicit NativeScrollBarViews(NativeScrollBar* native_scroll_bar);
-  ~NativeScrollBarViews() override;
+  explicit ScrollBarViews(bool horizontal);
+  ~ScrollBarViews() override;
 
- private:
+  static int GetVerticalScrollBarWidth(const ui::NativeTheme* theme);
+
+ protected:
   // View overrides:
   void Layout() override;
   void OnPaint(gfx::Canvas* canvas) override;
   gfx::Size GetPreferredSize() const override;
   const char* GetClassName() const override;
 
   // ScrollBar overrides:
   int GetLayoutSize() const override;
 
-  // BaseScrollBar overrides:
-  void ScrollToPosition(int position) override;
-  int GetScrollIncrement(bool is_page, bool is_positive) override;
-
   // BaseButton::ButtonListener overrides:
   void ButtonPressed(Button* sender, const ui::Event& event) override;
 
-  // NativeScrollBarWrapper overrides:
-  int GetPosition() const override;
-  View* GetView() override;
-  void Update(int viewport_size, int content_size, int current_pos) override;
-
   // Returns the area for the track. This is the area of the scrollbar minus
   // the size of the arrow buttons.
   gfx::Rect GetTrackBounds() const override;
 
-  // The NativeScrollBar we are bound to.
-  NativeScrollBar* native_scroll_bar_;
-
+ private:
   // The scroll bar buttons (Up/Down, Left/Right).
   Button* prev_button_;
   Button* next_button_;
 
   ui::NativeTheme::ExtraParams params_;
   ui::NativeTheme::Part part_;
   ui::NativeTheme::State state_;
 
-  DISALLOW_COPY_AND_ASSIGN(NativeScrollBarViews);
+  DISALLOW_COPY_AND_ASSIGN(ScrollBarViews);
 };
 
 }  // namespace views
 
-#endif  // UI_VIEWS_CONTROLS_SCROLLBAR_NATIVE_SCROLL_BAR_VIEWS_H_
+#endif  // UI_VIEWS_CONTROLS_SCROLLBAR_SCROLL_BAR_VIEWS_H_