Move dir_reader to base/files

base/files/dir_reader_posix.h

-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// 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 BASE_DIR_READER_POSIX_H_
-#define BASE_DIR_READER_POSIX_H_
+#ifndef BASE_FILES_DIR_READER_POSIX_H_
+#define BASE_FILES_DIR_READER_POSIX_H_
 #pragma once
 
 #include "build/build_config.h"
 
 // This header provides a class, DirReaderPosix, which allows one to open and
 // read from directories without allocating memory. For the interface, see
 // the generic fallback in dir_reader_fallback.h.
 
 // Mac note: OS X has getdirentries, but it only works if we restrict Chrome to
 // 32-bit inodes. There is a getdirentries64 syscall in 10.6, but it's not
 // wrapped and the direct syscall interface is unstable. Using an unstable API
 // seems worse than falling back to enumerating all file descriptors so we will
 // probably never implement this on the Mac.
 
 #if defined(OS_LINUX)
-#include "base/dir_reader_linux.h"
+#include "base/files/dir_reader_linux.h"
 #else
-#include "base/dir_reader_fallback.h"
+#include "base/files/dir_reader_fallback.h"
 #endif
 
 namespace base {
 
 #if defined(OS_LINUX)
 typedef DirReaderLinux DirReaderPosix;
 #else
 typedef DirReaderFallback DirReaderPosix;
 #endif
 
 }  // namespace base
 
-#endif // BASE_DIR_READER_POSIX_H_
+#endif // BASE_FILES_DIR_READER_POSIX_H_