Added Ctrl+Shift+w keyboard shortcut to close a window.

chrome/browser/ui/gtk/accelerators_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/accelerators_gtk.h"
 
 #include <gdk/gdk.h>
 #include <gdk/gdkkeysyms.h>
 #include <X11/XF86keysym.h>
 
@@ skipping 28 matching lines @@
   { GDK_Page_Up, IDC_MOVE_TAB_PREVIOUS,
     GdkModifierType(GDK_CONTROL_MASK | GDK_SHIFT_MASK) },
   { GDK_Page_Up, IDC_SELECT_PREVIOUS_TAB, GDK_CONTROL_MASK },
   { GDK_w, IDC_CLOSE_TAB, GDK_CONTROL_MASK },
   { GDK_t, IDC_RESTORE_TAB,
     GdkModifierType(GDK_CONTROL_MASK | GDK_SHIFT_MASK) },
   { GDK_t, IDC_NEW_TAB, GDK_CONTROL_MASK },
   { GDK_n, IDC_NEW_WINDOW, GDK_CONTROL_MASK },
   { GDK_n, IDC_NEW_INCOGNITO_WINDOW,
     GdkModifierType(GDK_CONTROL_MASK | GDK_SHIFT_MASK) },
+  { GDK_w, IDC_CLOSE_WINDOW,
+    GdkModifierType(GDK_CONTROL_MASK | GDK_SHIFT_MASK) },
 
   { GDK_1, IDC_SELECT_TAB_0, GDK_CONTROL_MASK },
   { GDK_2, IDC_SELECT_TAB_1, GDK_CONTROL_MASK },
   { GDK_3, IDC_SELECT_TAB_2, GDK_CONTROL_MASK },
   { GDK_4, IDC_SELECT_TAB_3, GDK_CONTROL_MASK },
   { GDK_5, IDC_SELECT_TAB_4, GDK_CONTROL_MASK },
   { GDK_6, IDC_SELECT_TAB_5, GDK_CONTROL_MASK },
   { GDK_7, IDC_SELECT_TAB_6, GDK_CONTROL_MASK },
   { GDK_8, IDC_SELECT_TAB_7, GDK_CONTROL_MASK },
   { GDK_9, IDC_SELECT_LAST_TAB, GDK_CONTROL_MASK },
@@ skipping 141 matching lines @@
 const ui::AcceleratorGtk* AcceleratorsGtk::GetPrimaryAcceleratorForCommand(
     int command_id) {
   base::hash_map<int, ui::AcceleratorGtk>::const_iterator iter =
       primary_accelerators_.find(command_id);
 
   if (iter == primary_accelerators_.end())
     return NULL;
 
   return &iter->second;
 }