Make infobars ignore button clicks when closing.

chrome/browser/ui/gtk/infobars/translate_infobar_base_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/translate_infobar_base_gtk.h"
 
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/translate/options_menu_model.h"
 #include "chrome/browser/translate/translate_infobar_delegate.h"
 #include "chrome/browser/ui/gtk/gtk_util.h"
@@ skipping 191 matching lines @@
 
   GtkWidget* arrow = gtk_arrow_new(GTK_ARROW_DOWN, GTK_SHADOW_NONE);
   gtk_box_pack_start(GTK_BOX(hbox), arrow, FALSE, FALSE, 0);
 
   gtk_container_add(GTK_CONTAINER(button), hbox);
 
   return button;
 }
 
 void TranslateInfoBarBase::OnOptionsClicked(GtkWidget* sender) {
+  if (!owned())
+    return;  // We're closing; don't call anything, it might access the owner.
   if (!options_menu_model_.get()) {
     options_menu_model_.reset(new OptionsMenuModel(GetDelegate()));
     options_menu_menu_.reset(new MenuGtk(NULL, options_menu_model_.get()));
   }
   options_menu_menu_->PopupForWidget(sender, 1, gtk_get_current_event_time());
 }
 
 // TranslateInfoBarDelegate specific method:
 InfoBar* TranslateInfoBarDelegate::CreateInfoBar(TabContentsWrapper* owner) {
   TranslateInfoBarBase* infobar = NULL;
   switch (type_) {
     case BEFORE_TRANSLATE:
       infobar = new BeforeTranslateInfoBar(owner, this);
       break;
     case AFTER_TRANSLATE:
       infobar = new AfterTranslateInfoBar(owner, this);
       break;
     case TRANSLATING:
     case TRANSLATION_ERROR:
       infobar = new TranslateMessageInfoBar(owner, this);
       break;
     default:
       NOTREACHED();
   }
   infobar->Init();
   return infobar;
 }