Removing deprecated GTK-Views code.

ui/views/controls/scrollbar/native_scroll_bar_gtk.h

-// Copyright (c) 2011 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_GTK_H_
-#define UI_VIEWS_CONTROLS_SCROLLBAR_NATIVE_SCROLL_BAR_GTK_H_
-#pragma once
-
-#include "base/compiler_specific.h"
-#include "ui/views/controls/native_control_gtk.h"
-#include "ui/views/controls/scrollbar/native_scroll_bar_wrapper.h"
-
-namespace views {
-
-/////////////////////////////////////////////////////////////////////////////
-//
-// NativeScrollBarGtk
-//
-// A View subclass that wraps a Native gtk scrollbar control.
-//
-// A scrollbar is either horizontal or vertical.
-//
-/////////////////////////////////////////////////////////////////////////////
-class NativeScrollBarGtk : public NativeControlGtk,
-                           public NativeScrollBarWrapper {
- public:
-  // Creates new scrollbar, either horizontal or vertical.
-  explicit NativeScrollBarGtk(NativeScrollBar* native_scroll_bar);
-  virtual ~NativeScrollBarGtk();
-
- private:
-  // Overridden from View for layout purpose.
-  virtual void Layout() OVERRIDE;
-  virtual gfx::Size GetPreferredSize() OVERRIDE;
-
-  // Overridden from View for keyboard UI purpose.
-  virtual bool OnKeyPressed(const KeyEvent& event) OVERRIDE;
-  virtual bool OnMouseWheel(const MouseWheelEvent& e) OVERRIDE;
-
-  // Overridden from NativeControlGtk.
-  virtual void CreateNativeControl() OVERRIDE;
-
-  // Overridden from NativeScrollBarWrapper.
-  virtual int GetPosition() const OVERRIDE;
-  virtual View* GetView() OVERRIDE;
-  virtual void Update(int viewport_size,
-                      int content_size,
-                      int current_pos) OVERRIDE;
-
-  // Moves the scrollbar by the given value. Negative value is allowed.
-  // (moves upward)
-  void MoveBy(int o);
-
-  // Moves the scrollbar by the page (viewport) size.
-  void MovePage(bool positive);
-
-  // Moves the scrollbar by predefined step size.
-  void MoveStep(bool positive);
-
-  // Moves the scrollbar to the given position. MoveTo(0) moves it to the top.
-  void MoveTo(int p);
-
-  // Moves the scrollbar to the end.
-  void MoveToBottom();
-
-  // Invoked when the scrollbar's position is changed.
-  void ValueChanged();
-  static void CallValueChanged(GtkWidget* widget,
-                               NativeScrollBarGtk* scroll_bar);
-
-  // The NativeScrollBar we are bound to.
-  NativeScrollBar* native_scroll_bar_;
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(NativeScrollBarGtk);
-};
-
-}  // namespace views
-
-#endif  // UI_VIEWS_CONTROLS_SCROLLBAR_NATIVE_SCROLL_BAR_GTK_H_