gtk: Cleanup JSModalDialogGtk implementation.

chrome/browser/gtk/js_modal_dialog_gtk.h

Index: chrome/browser/gtk/js_modal_dialog_gtk.h
diff --git a/chrome/browser/gtk/js_modal_dialog_gtk.h b/chrome/browser/gtk/js_modal_dialog_gtk.h
index 47ca0ca204ba3676cabdc5a9efafd6edccd08929..a6a132b9a7da2deab724d3d1de1f4ea3b6970479 100644
--- a/chrome/browser/gtk/js_modal_dialog_gtk.h
+++ b/chrome/browser/gtk/js_modal_dialog_gtk.h
@@ -6,14 +6,14 @@
 #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 {
@@ -31,9 +31,7 @@ class JSModalDialogGtk : public NativeAppModalDialog {
   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_;
@@ -42,4 +40,3 @@ class JSModalDialogGtk : public NativeAppModalDialog {
 };
 
 #endif  // CHROME_BROWSER_GTK_JS_MODAL_DIALOG_GTK_H_
-