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

chrome/browser/ui/views/infobars/extension_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/extension_infobar.h"
 
 #include "chrome/browser/extensions/extension_context_menu_model.h"
 #include "chrome/browser/extensions/extension_host.h"
 #include "chrome/browser/extensions/extension_infobar_delegate.h"
 #include "chrome/browser/platform_util.h"
@@ skipping 86 matching lines @@
         gfx::Size(image_size, image_size), ImageLoadingTracker::DONT_CACHE);
   } else {
     OnImageLoaded(NULL, icon_resource, 0);
   }
 }
 
 int ExtensionInfoBar::ContentMinimumWidth() const {
   return menu_->GetPreferredSize().width() + kMenuHorizontalMargin;
 }
 
+void ExtensionInfoBar::CancelMenu() {
+  menu_runner_.reset();
+}
+
 void ExtensionInfoBar::OnImageLoaded(SkBitmap* image,
                                      const ExtensionResource& resource,
                                      int index) {
   if (!GetDelegate())
     return;  // The delegate can go away while we asynchronously load images.
 
   SkBitmap* icon = image;
   // Fall back on the default extension icon on failure.
   ResourceBundle& rb = ResourceBundle::GetSharedInstance();
   if (!image || image->empty())
@@ skipping 37 matching lines @@
   views::View::ConvertPointToScreen(menu_, &screen_point);
   if (menu_runner_->RunMenuAt(GetWidget(), menu_,
           gfx::Rect(screen_point, menu_->size()), views::MenuItemView::TOPLEFT,
           views::MenuRunner::HAS_MNEMONICS) == views::MenuRunner::MENU_DELETED)
     return;
 }
 
 ExtensionInfoBarDelegate* ExtensionInfoBar::GetDelegate() {
   return delegate_ ? delegate_->AsExtensionInfoBarDelegate() : NULL;
 }