gtk: Cleanup JSModalDialogGtk implementation.

chrome/browser/gtk/js_modal_dialog_gtk.h

 // Copyright (c) 2010 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 CHROME_BROWSER_GTK_JS_MODAL_DIALOG_GTK_H_
 #define CHROME_BROWSER_GTK_JS_MODAL_DIALOG_GTK_H_
 #pragma once
 
-#include <gtk/gtk.h>
-
 #include "app/gtk_signal.h"
-#include "base/logging.h"
+#include "base/basictypes.h"
 #include "base/scoped_ptr.h"
 #include "chrome/browser/ui/app_modal_dialogs/native_app_modal_dialog.h"
 #include "gfx/native_widget_types.h"
 
+typedef struct _GtkWidget GtkWidget;
+
 class JavaScriptAppModalDialog;
 
 class JSModalDialogGtk : public NativeAppModalDialog {
  public:
   JSModalDialogGtk(JavaScriptAppModalDialog* dialog,
                    gfx::NativeWindow parent_window);
   virtual ~JSModalDialogGtk();
 
   // Overridden from NativeAppModalDialog:
   virtual int GetAppModalDialogButtons() const;
   virtual void ShowAppModalDialog();
   virtual void ActivateAppModalDialog();
   virtual void CloseAppModalDialog();
   virtual void AcceptAppModalDialog();
   virtual void CancelAppModalDialog();
 
  private:
-  void HandleDialogResponse(GtkDialog* dialog, gint response_id);
-  static void OnDialogResponse(GtkDialog* gtk_dialog, gint response_id,
-                               JSModalDialogGtk* dialog);
+  CHROMEGTK_CALLBACK_1(JSModalDialogGtk, void, OnDialogResponse, int);
 
   scoped_ptr<JavaScriptAppModalDialog> dialog_;
   GtkWidget* gtk_dialog_;
 
   DISALLOW_COPY_AND_ASSIGN(JSModalDialogGtk);
 };
 
 #endif  // CHROME_BROWSER_GTK_JS_MODAL_DIALOG_GTK_H_
-