Switch to standard integer types in ui/gfx/.

ui/gfx/range/range_mac.mm

 // 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/gfx/range/range.h"
 
+#include <stddef.h>
+
 #include <limits>
 
 #include "base/logging.h"
 
 namespace gfx {
 
 Range::Range(const NSRange& range) {
   *this = range;
 }
 
@@ skipping 10 matching lines @@
   return *this;
 }
 
 NSRange Range::ToNSRange() const {
   if (!IsValid())
     return NSMakeRange(NSNotFound, 0);
   return NSMakeRange(GetMin(), length());
 }
 
 }  // namespace gfx