Move more file_util functions to base namespace.

base/file_util_linux.cc

 // 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 "base/file_util.h"
 
 #include <errno.h>
 #include <linux/magic.h>
 #include <sys/vfs.h>
 
 #include "base/files/file_path.h"
 
 // Make sure some of the newer macros from magic.h are defined.
 // TODO(mostynb@opera.com): remove this after 2014.
 #ifndef BTRFS_SUPER_MAGIC
 #define BTRFS_SUPER_MAGIC 0x9123683E
 #endif
 #ifndef HUGETLBFS_MAGIC
 #define HUGETLBFS_MAGIC 0x958458f6
 #endif
 #ifndef RAMFS_MAGIC
 #define RAMFS_MAGIC 0x858458f6
 #endif
 #ifndef TMPFS_MAGIC
 #define TMPFS_MAGIC 0x01021994
 #endif
 
-namespace file_util {
+namespace base {
 
-bool GetFileSystemType(const base::FilePath& path, FileSystemType* type) {
+bool GetFileSystemType(const FilePath& path, FileSystemType* type) {
   struct statfs statfs_buf;
   if (statfs(path.value().c_str(), &statfs_buf) < 0) {
     if (errno == ENOENT)
       return false;
     *type = FILE_SYSTEM_UNKNOWN;
     return true;
   }
 
   // Not all possible |statfs_buf.f_type| values are in linux/magic.h.
   // Missing values are copied from the statfs man page.
@@ skipping 27 matching lines @@
       break;
     case CGROUP_SUPER_MAGIC:
       *type = FILE_SYSTEM_CGROUP;
       break;
     default:
       *type = FILE_SYSTEM_OTHER;
   }
   return true;
 }
 
-}  // namespace file_util
+}  // namespace base