GTK: Speculative fix for crash in PluginInfoBarDelegate::Cancel.

chrome/browser/ui/gtk/infobars/confirm_infobar_gtk.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/infobars/confirm_infobar_gtk.h"
 
 #include <gtk/gtk.h>
 
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/ui/gtk/gtk_chrome_link_button.h"
@@ skipping 57 matching lines @@
 void ConfirmInfoBarGtk::AddButton(ConfirmInfoBarDelegate::InfoBarButton type) {
   if (delegate()->AsConfirmInfoBarDelegate()->GetButtons() & type) {
     if (!size_group_)
       size_group_ = gtk_size_group_new(GTK_SIZE_GROUP_HORIZONTAL);
 
     GtkWidget* button = gtk_button_new_with_label(UTF16ToUTF8(
         delegate()->AsConfirmInfoBarDelegate()->GetButtonLabel(type)).c_str());
     gtk_size_group_add_widget(size_group_, button);
 
     gtk_util::CenterWidgetInHBox(confirm_hbox_, button, true, 0);
-    g_signal_connect(button, "clicked",
-                     G_CALLBACK(type == ConfirmInfoBarDelegate::BUTTON_OK ?
-                                OnOkButtonThunk : OnCancelButtonThunk),
-                     this);
+    Signals()->Connect(button, "clicked",
+                       G_CALLBACK(type == ConfirmInfoBarDelegate::BUTTON_OK ?
+                                  OnOkButtonThunk : OnCancelButtonThunk),
+                       this);
   }
 }
 
 void ConfirmInfoBarGtk::OnOkButton(GtkWidget* widget) {
   if (delegate()->AsConfirmInfoBarDelegate()->Accept())
     RemoveSelf();
 }
 
 void ConfirmInfoBarGtk::OnCancelButton(GtkWidget* widget) {
   if (delegate()->AsConfirmInfoBarDelegate()->Cancel())
     RemoveSelf();
 }
 
 void ConfirmInfoBarGtk::OnLinkClicked(GtkWidget* widget) {
   if (delegate()->AsConfirmInfoBarDelegate()->LinkClicked(
         gtk_util::DispositionForCurrentButtonPressEvent()))
     RemoveSelf();
 }