gtk: Make use of the gtk signal macro in HtmlDialogGtk class.

chrome/browser/gtk/html_dialog_gtk.h

-// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// 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_HTML_DIALOG_GTK_H_
 #define CHROME_BROWSER_GTK_HTML_DIALOG_GTK_H_
 
 #include <string>
 #include <vector>
 
+#include "app/gtk_signal.h"
 #include "base/scoped_ptr.h"
 #include "chrome/browser/dom_ui/html_dialog_ui.h"
 #include "chrome/browser/dom_ui/html_dialog_tab_contents_delegate.h"
 #include "gfx/native_widget_types.h"
 #include "gfx/size.h"
 
 typedef struct _GtkWidget GtkWidget;
 
 class Browser;
 class Profile;
@@ skipping 23 matching lines @@
   virtual std::string GetDialogArgs() const;
   virtual void OnDialogClosed(const std::string& json_retval);
   virtual void OnCloseContents(TabContents* source, bool* out_close_dialog) { }
 
   // Overridden from TabContentsDelegate:
   virtual void MoveContents(TabContents* source, const gfx::Rect& pos);
   virtual void ToolbarSizeChanged(TabContents* source, bool is_animating);
   virtual void HandleKeyboardEvent(const NativeWebKeyboardEvent& event);
 
  private:
-  static void OnResponse(GtkWidget* widget, int response,
-                         HtmlDialogGtk* dialog);
+  CHROMEGTK_CALLBACK_1(HtmlDialogGtk, void, OnResponse, int);
 
   // This view is a delegate to the HTML content since it needs to get notified
   // about when the dialog is closing. For all other actions (besides dialog
   // closing) we delegate to the creator of this view, which we keep track of
   // using this variable.
   HtmlDialogUIDelegate* delegate_;
 
   gfx::NativeWindow parent_window_;
 
   GtkWidget* dialog_;
 
   scoped_ptr<TabContents> tab_contents_;
   scoped_ptr<TabContentsContainerGtk> tab_contents_container_;
 
   DISALLOW_COPY_AND_ASSIGN(HtmlDialogGtk);
 };
 
 #endif  // CHROME_BROWSER_GTK_HTML_DIALOG_GTK_H_