wm: Update namespace and header define guards.

src/platform/window_manager/hotkey_overlay.h

 // Copyright (c) 2009 The Chromium OS 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 __PLATFORM_WINDOW_MANAGER_IMAGE_OVERLAY_H__
-#define __PLATFORM_WINDOW_MANAGER_IMAGE_OVERLAY_H__
+#ifndef WINDOW_MANAGER_IMAGE_OVERLAY_H_
+#define WINDOW_MANAGER_IMAGE_OVERLAY_H_
 
 #include <map>
 #include <string>
 #include <tr1/memory>
 
 extern "C" {
 #include <X11/Xlib.h>
 }
 
 #include "base/basictypes.h"
 #include "base/scoped_ptr.h"
 #include "window_manager/clutter_interface.h"
 
-namespace chromeos {
+namespace window_manager {
 
 class ClutterInterface;
 class XConnection;
 
 // Display overlay images to help users learn keyboard shortcuts.
 // The actor returned by group() should be added to the stage and moved to
 // its center; the group's visibility and opacity can be manipulated
 // directly.
 class HotkeyOverlay {
  public:
@@ skipping 37 matching lines @@
   bool left_ctrl_pressed_;
   bool right_ctrl_pressed_;
   bool left_alt_pressed_;
   bool right_alt_pressed_;
   bool left_shift_pressed_;
   bool right_shift_pressed_;
 
   DISALLOW_COPY_AND_ASSIGN(HotkeyOverlay);
 };
 
-}  // namespace chromeos
+}  // namespace window_manager
 
 #endif