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

chrome/browser/ui/gtk/edit_search_engine_dialog.cc

 // 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.
 
 #include "chrome/browser/ui/gtk/edit_search_engine_dialog.h"
 
 #include <gtk/gtk.h>
 
 #include "base/i18n/rtl.h"
 #include "base/message_loop.h"
@@ skipping 243 matching lines @@
     gtk_image_set_from_pixbuf(GTK_IMAGE(image),
         ResourceBundle::GetSharedInstance().GetPixbufNamed(
             IDR_INPUT_ALERT));
   }
 }
 
 void EditSearchEngineDialog::OnEntryChanged(GtkEditable* editable) {
   EnableControls();
 }
 
-void EditSearchEngineDialog::OnResponse(GtkDialog* dialog, int response_id) {
+void EditSearchEngineDialog::OnResponse(GtkWidget* dialog, int response_id) {
   if (response_id == GTK_RESPONSE_OK) {
     controller_->AcceptAddOrEdit(GetTitleInput(),
                                  GetKeywordInput(),
                                  GetURLInput());
   } else {
     controller_->CleanUpCancelledAdd();
   }
   gtk_widget_destroy(dialog_);
 }
 
 void EditSearchEngineDialog::OnWindowDestroy(GtkWidget* widget) {
   MessageLoop::current()->DeleteSoon(FROM_HERE, this);
 }