gtk: Rename OnDialogResponse() to OnResponse() to standardize on a consistent naming scheme.

chrome/browser/ui/gtk/external_protocol_dialog_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 CHROME_BROWSER_UI_GTK_EXTERNAL_PROTOCOL_DIALOG_GTK_H_
 #define CHROME_BROWSER_UI_GTK_EXTERNAL_PROTOCOL_DIALOG_GTK_H_
 #pragma once
 
+#include "base/basictypes.h"
 #include "base/time.h"
 #include "googleurl/src/gurl.h"
 #include "ui/base/gtk/gtk_signal.h"
 
-class TabContents;
-
 typedef struct _GtkWidget GtkWidget;
 
 class ExternalProtocolDialogGtk {
  public:
   explicit ExternalProtocolDialogGtk(const GURL& url);
-
- protected:
-  virtual ~ExternalProtocolDialogGtk() {}
+  ~ExternalProtocolDialogGtk();
 
  private:
-  CHROMEGTK_CALLBACK_1(ExternalProtocolDialogGtk, void, OnDialogResponse, int);
+  CHROMEGTK_CALLBACK_1(ExternalProtocolDialogGtk, void, OnResponse, int);
 
   GtkWidget* dialog_;
   GtkWidget* checkbox_;
   GURL url_;
   base::TimeTicks creation_time_;
+
+  DISALLOW_COPY_AND_ASSIGN(ExternalProtocolDialogGtk);
 };
 
 #endif  // CHROME_BROWSER_UI_GTK_EXTERNAL_PROTOCOL_DIALOG_GTK_H_