Refresh keyboard mapping when they're updated

ui/aura/desktop_host_linux.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 "ui/aura/desktop_host.h"
 
 #include <X11/cursorfont.h>
 #include <X11/Xlib.h>
 
 // Get rid of a macro from Xlib.h that conflicts with Aura's RootWindow class.
@@ skipping 449 matching lines @@
       break;
     }
     case MapNotify: {
       // If there's no window manager running, we need to assign the X input
       // focus to our host window.
       if (!IsWindowManagerPresent())
         XSetInputFocus(xdisplay_, xwindow_, RevertToNone, CurrentTime);
       handled = true;
       break;
     }
+    case MappingNotify: {
+      if (xev->xmapping.request == MappingModifier ||
+          xev->xmapping.request == MappingKeyboard)
+        XRefreshKeyboardMapping(&xev->xmapping);
+      break;
+    }
     case MotionNotify: {
       // Discard all but the most recent motion event that targets the same
       // window with unchanged state.
       XEvent last_event;
       while (XPending(xev->xany.display)) {
         XEvent next_event;
         XPeekEvent(xev->xany.display, &next_event);
         if (next_event.type == MotionNotify &&
             next_event.xmotion.window == xev->xmotion.window &&
             next_event.xmotion.subwindow == xev->xmotion.subwindow &&
@@ skipping 129 matching lines @@
   return new DesktopHostLinux(bounds);
 }
 
 // static
 gfx::Size DesktopHost::GetNativeScreenSize() {
   ::Display* xdisplay = base::MessagePumpX::GetDefaultXDisplay();
   return gfx::Size(DisplayWidth(xdisplay, 0), DisplayHeight(xdisplay, 0));
 }
 
 }  // namespace aura