Delete the GTK+ port of Chrome.

chrome/browser/ui/gtk/menu_bar_helper.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.
-//
-// This class replicates some menubar behaviors that are tricky to get right.
-// It is used to create a more native feel for the bookmark bar.
-
-#ifndef CHROME_BROWSER_UI_GTK_MENU_BAR_HELPER_H_
-#define CHROME_BROWSER_UI_GTK_MENU_BAR_HELPER_H_
-
-#include <gtk/gtk.h>
-
-#include <vector>
-
-#include "base/memory/scoped_ptr.h"
-#include "ui/base/gtk/gtk_signal.h"
-
-namespace ui {
-class GtkSignalRegistrar;
-}
-
-class MenuBarHelper {
- public:
-  class Delegate {
-   public:
-    virtual ~Delegate() {}
-
-    // Called when a the menu for a button ought to be triggered.
-    virtual void PopupForButton(GtkWidget* button) = 0;
-    virtual void PopupForButtonNextTo(GtkWidget* button,
-                                      GtkMenuDirectionType dir) = 0;
-  };
-
-  // |delegate| cannot be null.
-  explicit MenuBarHelper(Delegate* delegate);
-  ~MenuBarHelper();
-
-  // Must be called whenever a button's menu starts showing. It triggers the
-  // MenuBarHelper to start listening for certain events.
-  void MenuStartedShowing(GtkWidget* button, GtkWidget* menu);
-
-  // Add |button| to the set of buttons we care about.
-  void Add(GtkWidget* button);
-
-  // Remove |button| from the set of buttons we care about.
-  void Remove(GtkWidget* button);
-
-  // Clear all buttons from the set.
-  void Clear();
-
- private:
-  CHROMEGTK_CALLBACK_0(MenuBarHelper, void, OnMenuHiddenOrDestroyed);
-  CHROMEGTK_CALLBACK_1(MenuBarHelper, gboolean, OnMenuMotionNotify,
-                       GdkEventMotion*);
-  CHROMEGTK_CALLBACK_1(MenuBarHelper, void, OnMenuMoveCurrent,
-                       GtkMenuDirectionType);
-
-  // The buttons for which we pop up menus. We do not own these, or even add
-  // refs to them.
-  std::vector<GtkWidget*> buttons_;
-
-  // The button that is currently showing a menu, or NULL.
-  GtkWidget* button_showing_menu_;
-
-  // The highest level menu that is currently showing, or NULL.
-  GtkWidget* showing_menu_;
-
-  // All the submenus of |showing_menu_|. We connect to motion events on all
-  // of them.
-  std::vector<GtkWidget*> submenus_;
-
-  // Signal handlers that are attached only between the "show" and "hide" events
-  // for the menu.
-  scoped_ptr<ui::GtkSignalRegistrar> signal_handlers_;
-
-  Delegate* delegate_;
-};
-
-#endif  // CHROME_BROWSER_UI_GTK_MENU_BAR_HELPER_H_