Fixes crash when closing tab then quickly right clicking. The problem

chrome/browser/ui/views/tabs/base_tab.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/tabs/base_tab.h"
 
 #include <limits>
 
 #include "base/command_line.h"
 #include "base/utf_string_conversions.h"
@@ skipping 495 matching lines @@
 }
 
 void BaseTab::ButtonPressed(views::Button* sender, const views::Event& event) {
   DCHECK(sender == close_button_);
   controller()->CloseTab(this);
 }
 
 void BaseTab::ShowContextMenuForView(views::View* source,
                                      const gfx::Point& p,
                                      bool is_mouse_gesture) {
-  if (controller())
+  if (controller() && !closing())
     controller()->ShowContextMenuForTab(this, p);
 }
 
 int BaseTab::loading_animation_frame() const {
   return loading_animation_frame_;
 }
 
 bool BaseTab::should_display_crashed_favicon() const {
   return should_display_crashed_favicon_;
 }
@@ skipping 48 matching lines @@
 // static
 void BaseTab::InitResources() {
   static bool initialized = false;
   if (!initialized) {
     initialized = true;
     font_ = new gfx::Font(
         ResourceBundle::GetSharedInstance().GetFont(ResourceBundle::BaseFont));
     font_height_ = font_->GetHeight();
   }
 }