Switch to standard integer types in components/, part 4 of 4.

components/user_manager/user_image/default_user_images.h

 // Copyright 2014 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 COMPONENTS_USER_MANAGER_USER_IMAGE_DEFAULT_USER_IMAGES_H_
 #define COMPONENTS_USER_MANAGER_USER_IMAGE_DEFAULT_USER_IMAGES_H_
 
-#include <cstddef>  // for size_t
+#include <stddef.h>
+
 #include <string>
 
 #include "base/strings/string16.h"
 #include "components/user_manager/user_manager_export.h"
 
 namespace gfx {
 class ImageSkia;
 }
 
 namespace user_manager {
@@ skipping 50 matching lines @@
 
 // Number of possible histogram values for user images.
 USER_MANAGER_EXPORT extern const int kHistogramImagesCount;
 
 // Returns the histogram value corresponding to the given default image index.
 USER_MANAGER_EXPORT int GetDefaultImageHistogramValue(int index);
 
 }  // namespace user_manager
 
 #endif  // COMPONENTS_USER_MANAGER_USER_IMAGE_DEFAULT_USER_IMAGES_H_