[cros login] Split login related classes into subfolders.

chrome/browser/chromeos/login/users/avatar/default_user_images.h

 // Copyright (c) 2012 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.
 
-#ifndef CHROME_BROWSER_CHROMEOS_LOGIN_DEFAULT_USER_IMAGES_H_
-#define CHROME_BROWSER_CHROMEOS_LOGIN_DEFAULT_USER_IMAGES_H_
+#ifndef CHROME_BROWSER_CHROMEOS_LOGIN_USERS_AVATAR_DEFAULT_USER_IMAGES_H_
+#define CHROME_BROWSER_CHROMEOS_LOGIN_USERS_AVATAR_DEFAULT_USER_IMAGES_H_
 
 #include <cstddef>  // for size_t
 #include <string>
 
 #include "base/strings/string16.h"
 
 namespace gfx {
 class ImageSkia;
 }
 
@@ skipping 59 matching lines @@
 extern const int kHistogramVideoFromFile;
 
 // Number of possible histogram values for user images.
 extern const int kHistogramImagesCount;
 
 // Returns the histogram value corresponding to the given default image index.
 int GetDefaultImageHistogramValue(int index);
 
 }  // namespace chromeos
 
-#endif  // CHROME_BROWSER_CHROMEOS_LOGIN_DEFAULT_USER_IMAGES_H_
+#endif  // CHROME_BROWSER_CHROMEOS_LOGIN_USERS_AVATAR_DEFAULT_USER_IMAGES_H_