wm: Update namespace and header define guards.

src/platform/window_manager/real_x_connection.cc

 // 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.
 
 #include "window_manager/real_x_connection.h"
 
 extern "C" {
 #include <X11/extensions/randr.h>
 #include <X11/extensions/shape.h>
 #include <X11/extensions/Xcomposite.h>
 #include <X11/extensions/Xrandr.h>
 #include <X11/Xatom.h>
 #include <X11/Xutil.h>
 #include <X11/XKBlib.h>
 }
 
 #include "chromeos/obsolete_logging.h"
 
 #include "window_manager/util.h"
 
-namespace chromeos {
+namespace window_manager {
 
 using std::string;
 using std::vector;
 using std::hex;
 
 // Maximum number of integer values to allow in a property.
 static const size_t kMaxIntPropertySize = 1024;
 
 static int (*old_error_handler)(Display*, XErrorEvent*) = NULL;
 
@@ skipping 952 matching lines @@
 int RealXConnection::GetLastErrorCode() {
   return last_trapped_error_code;
 }
 
 string RealXConnection::GetErrorText(int error_code) {
   char str[1024];
   XGetErrorText(display_, error_code, str, sizeof(str));
   return string(str);
 }
 
-}  // namespace chromeos
+}  // namespace window_manager