Switch to standard integer types in base/files/.

base/files/scoped_file.cc

 // 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.
 
 #include "base/files/scoped_file.h"
 
 #include "base/logging.h"
+#include "build/build_config.h"
 
 #if defined(OS_POSIX)
 #include <unistd.h>
 
 #include "base/posix/eintr_wrapper.h"
 #endif
 
 namespace base {
 namespace internal {
 
 #if defined(OS_POSIX)
 
 // static
 void ScopedFDCloseTraits::Free(int fd) {
   // It's important to crash here.
   // There are security implications to not closing a file descriptor
   // properly. As file descriptors are "capabilities", keeping them open
   // would make the current process keep access to a resource. Much of
   // Chrome relies on being able to "drop" such access.
   // It's especially problematic on Linux with the setuid sandbox, where
   // a single open directory would bypass the entire security model.
   PCHECK(0 == IGNORE_EINTR(close(fd)));
 }
 
 #endif  // OS_POSIX
 
 }  // namespace internal
 }  // namespace base