Use windows keycodes under linux (and all non-windows platforms).

chrome/browser/views/tab_contents/tab_contents_view_gtk.cc

 // 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.
 
 #include "chrome/browser/views/tab_contents/tab_contents_view_gtk.h"
 
 #include <gdk/gdk.h>
 #include <gtk/gtk.h>
 
 #include "base/string_util.h"
@@ skipping 292 matching lines @@
   if (!focus_manager)
     return;
 
   bool shift_pressed = (event.modifiers & WebInputEvent::ShiftKey) ==
                        WebInputEvent::ShiftKey;
   bool ctrl_pressed = (event.modifiers & WebInputEvent::ControlKey) ==
                       WebInputEvent::ControlKey;
   bool alt_pressed = (event.modifiers & WebInputEvent::AltKey) ==
                      WebInputEvent::AltKey;
 
-  focus_manager->ProcessAccelerator(views::Accelerator(event.os_event->keyval,
+  focus_manager->ProcessAccelerator(views::Accelerator(event.windowsKeyCode,
                                                        shift_pressed,
                                                        ctrl_pressed,
                                                        alt_pressed));
   // DANGER: |this| could be deleted now!
 
   // Note that we do not handle Gtk mnemonics/accelerators or binding set here
   // (as it is done in BrowserWindowGtk::HandleKeyboardEvent), as we override
   // Gtk behavior completely.
 }
 
@@ skipping 63 matching lines @@
 
  private:
   DISALLOW_COPY_AND_ASSIGN(BlockedPopupContainerViewGtk);
 };
 
 // static
 BlockedPopupContainerView* BlockedPopupContainerView::Create(
     BlockedPopupContainer* container) {
   return new BlockedPopupContainerViewGtk;
 }