Remove ConstrainedWindowGtkDelegate

chrome/browser/ui/gtk/tab_modal_confirm_dialog_gtk.cc

 // Copyright (c) 2012 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/tab_modal_confirm_dialog_gtk.h"
 
 #include "base/message_loop.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/ui/browser_dialogs.h"
 #include "chrome/browser/ui/tab_modal_confirm_dialog_delegate.h"
@@ skipping 53 matching lines @@
   ok_ = gtk_button_new_with_label(
       UTF16ToUTF8(delegate->GetAcceptButtonTitle()).c_str());
   const char* accept_button_icon_id = delegate->GetAcceptButtonIcon();
   if (accept_button_icon_id) {
     gtk_button_set_image(GTK_BUTTON(ok_), gtk_image_new_from_stock(
         accept_button_icon_id, GTK_ICON_SIZE_BUTTON));
   }
   g_signal_connect(ok_, "clicked", G_CALLBACK(OnAcceptThunk), this);
   gtk_box_pack_end(GTK_BOX(buttonBox), ok_, FALSE, TRUE, 0);
 
-  window_ = CreateWebContentsModalDialogGtk(web_contents, this);
+  g_signal_connect(dialog_, "destroy", G_CALLBACK(OnDestroyThunk), this);
+
+  window_ = CreateWebContentsModalDialogGtk(web_contents, dialog_, cancel_);
   delegate_->set_close_delegate(this);
 
   WebContentsModalDialogManager* web_contents_modal_dialog_manager =
       WebContentsModalDialogManager::FromWebContents(web_contents);
   web_contents_modal_dialog_manager->ShowDialog(window_);
 }
 
-GtkWidget* TabModalConfirmDialogGtk::GetWidgetRoot() {
-  return dialog_;
-}
-
-GtkWidget* TabModalConfirmDialogGtk::GetFocusWidget() {
-  return cancel_;
-}
-
-void TabModalConfirmDialogGtk::DeleteDelegate() {
-  delete this;
-}
-
 TabModalConfirmDialogGtk::~TabModalConfirmDialogGtk() {
   gtk_widget_destroy(dialog_);
 }
 
 void TabModalConfirmDialogGtk::AcceptTabModalDialog() {
   OnAccept(NULL);
 }
 
 void TabModalConfirmDialogGtk::CancelTabModalDialog() {
   OnCancel(NULL);
 }
 
 void TabModalConfirmDialogGtk::CloseDialog() {
   gtk_widget_destroy(window_);
 }
 
 void TabModalConfirmDialogGtk::OnAccept(GtkWidget* widget) {
   delegate_->Accept();
 }
 
 void TabModalConfirmDialogGtk::OnCancel(GtkWidget* widget) {
   delegate_->Cancel();
 }
+
+void TabModalConfirmDialogGtk::OnDestroy(GtkWidget* widget) {
+  delete this;
+}