Removing deprecated GTK-Views code.

ui/views/widget/tooltip_manager_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_WIDGET_TOOLTIP_MANAGER_GTK_H_
-#define UI_VIEWS_WIDGET_TOOLTIP_MANAGER_GTK_H_
-#pragma once
-
-#include <gtk/gtk.h>
-
-#include "base/compiler_specific.h"
-#include "ui/base/gtk/tooltip_window_gtk.h"
-#include "ui/views/widget/tooltip_manager.h"
-
-namespace views {
-
-class NativeWidgetGtk;
-
-// TooltipManager implementation for Gtk.
-class TooltipManagerGtk : public TooltipManager {
- public:
-  explicit TooltipManagerGtk(NativeWidgetGtk* widget);
-  virtual ~TooltipManagerGtk() {}
-
-  // Shows the tooltip at the specified location. Returns true if the tooltip
-  // should be shown, false otherwise.
-  bool ShowTooltip(int x, int y, bool for_keyboard, GtkTooltip* gtk_tooltip);
-
-  // TooltipManager.
-  virtual void UpdateTooltip() OVERRIDE;
-  virtual void TooltipTextChanged(View* view) OVERRIDE;
-  virtual void ShowKeyboardTooltip(View* view) OVERRIDE;
-  virtual void HideKeyboardTooltip() OVERRIDE;
-
- private:
-  // Sends the show_help signal to widget_. This signal triggers showing the
-  // keyboard tooltip if it isn't showing, or hides it if it is showing.
-  bool SendShowHelpSignal();
-
-  // Our owner.
-  NativeWidgetGtk* widget_;
-
-  // The view supplied to the last invocation of ShowKeyboardTooltip.
-  View* keyboard_view_;
-
-  // Customized tooltip window.
-  ui::TooltipWindowGtk tooltip_window_;
-
-  DISALLOW_COPY_AND_ASSIGN(TooltipManagerGtk);
-};
-
-}  // namespace views
-
-#endif  // UI_VIEWS_WIDGET_TOOLTIP_MANAGER_GTK_H_