gtk: Disconnect the accelerator group keys when closing the browser window....

chrome/browser/gtk/browser_window_gtk.h

 // Copyright (c) 2009 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.
 
 #ifndef CHROME_BROWSER_GTK_BROWSER_WINDOW_GTK_H_
 #define CHROME_BROWSER_GTK_BROWSER_WINDOW_GTK_H_
 
 #include <gtk/gtk.h>
 
 #include <map>
@@ skipping 339 matching lines @@
   // True if the window manager thinks the window is active.  Not all window
   // managers keep track of this state (_NET_ACTIVE_WINDOW), in which case
   // this will always be true.
   bool is_active_;
 
   // Keep track of the last click time and the last click position so we can
   // filter out extra GDK_BUTTON_PRESS events when a double click happens.
   guint32 last_click_time_;
   gfx::Point last_click_position_;
 
+  // The accelerator group used to handle accelerators, owned by this object.
+  GtkAccelGroup* accel_group_;
+
   DISALLOW_COPY_AND_ASSIGN(BrowserWindowGtk);
 };
 
 #endif  // CHROME_BROWSER_GTK_BROWSER_WINDOW_GTK_H_