Attempt at fixing crash in menus shown from infobars. Here's what the

chrome/browser/ui/views/infobars/after_translate_infobar.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/views/infobars/after_translate_infobar.h"
 
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/translate/translate_infobar_delegate.h"
 #include "grit/generated_resources.h"
 #include "ui/base/l10n/l10n_util.h"
@@ skipping 147 matching lines @@
 
 void AfterTranslateInfoBar::TargetLanguageChanged() {
   // Tests can call this function when the infobar has never been added to a
   // view hierarchy and thus there is no button.
   if (target_language_menu_button_) {
     UpdateLanguageButtonText(target_language_menu_button_,
                              LanguagesMenuModel::TARGET);
   }
 }
 
+void AfterTranslateInfoBar::CancelMenu() {
+  menu_runner_.reset();
+}
+
 void AfterTranslateInfoBar::RunMenu(View* source, const gfx::Point& pt) {
   ui::MenuModel* menu_model = NULL;
   if (source == original_language_menu_button_) {
     menu_model = &original_language_menu_model_;
   } else if (source == target_language_menu_button_) {
     menu_model = &target_language_menu_model_;
   } else {
     DCHECK_EQ(options_menu_button_, source);
     menu_model = &options_menu_model_;
   }
 
   views::MenuModelAdapter menu_model_adapter(menu_model);
   menu_runner_.reset(new views::MenuRunner(menu_model_adapter.CreateMenu()));
   if (menu_runner_->RunMenuAt(
           source->GetWidget(), NULL, gfx::Rect(pt, gfx::Size()),
           views::MenuItemView::TOPRIGHT, views::MenuRunner::HAS_MNEMONICS) ==
       views::MenuRunner::MENU_DELETED)
     return;
 }