Removing deprecated GTK-Views code.

ui/views/controls/combobox/native_combobox_gtk.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_COMBOBOX_NATIVE_COMBOBOX_GTK_H_
-#define UI_VIEWS_CONTROLS_COMBOBOX_NATIVE_COMBOBOX_GTK_H_
-#pragma once
-
-#include "ui/base/gtk/gtk_signal.h"
-#include "ui/views/controls/combobox/native_combobox_wrapper.h"
-#include "ui/views/controls/native_control_gtk.h"
-
-namespace views {
-
-class NativeComboboxGtk : public NativeControlGtk,
-                          public NativeComboboxWrapper {
- public:
-  explicit NativeComboboxGtk(Combobox* combobox);
-  virtual ~NativeComboboxGtk();
-
-  // Overridden from NativeComboboxWrapper:
-  virtual void UpdateFromModel() OVERRIDE;
-  virtual void UpdateSelectedItem() OVERRIDE;
-  virtual void UpdateEnabled() OVERRIDE;
-  virtual int GetSelectedItem() const OVERRIDE;
-  virtual bool IsDropdownOpen() const OVERRIDE;
-  virtual gfx::Size GetPreferredSize() OVERRIDE;
-  virtual View* GetView() OVERRIDE;
-  virtual void SetFocus() OVERRIDE;
-  virtual bool HandleKeyPressed(const views::KeyEvent& event) OVERRIDE;
-  virtual bool HandleKeyReleased(const views::KeyEvent& event) OVERRIDE;
-  virtual void HandleFocus() OVERRIDE;
-  virtual void HandleBlur() OVERRIDE;
-  virtual gfx::NativeView GetTestingHandle() const OVERRIDE;
-
- protected:
-  // Overridden from NativeControlGtk:
-  virtual void CreateNativeControl() OVERRIDE;
-
- private:
-  void SelectionChanged();
-  void FocusedMenuItemChanged();
-
-  CHROMEGTK_CALLBACK_0(NativeComboboxGtk, void, CallChanged);
-  CHROMEGTK_CALLBACK_0(NativeComboboxGtk, gboolean, CallPopUp);
-  CHROMEGTK_CALLBACK_1(NativeComboboxGtk, void, CallMenuMoveCurrent,
-                       GtkMenuDirectionType);
-
-  // The combobox we are bound to.
-  Combobox* combobox_;
-
-  // The combo box's pop-up menu.
-  GtkMenu* menu_;
-
-  // The preferred size from the last size_request.
-  gfx::Size preferred_size_;
-
-  DISALLOW_COPY_AND_ASSIGN(NativeComboboxGtk);
-};
-
-}  // namespace views
-
-#endif  // UI_VIEWS_CONTROLS_COMBOBOX_NATIVE_COMBOBOX_GTK_H_