Move ReadFileToString to the base namespace.

base/sys_info_chromeos.cc

 // 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.
 
 #include "base/sys_info.h"
 
 #include "base/basictypes.h"
 #include "base/file_util.h"
 #include "base/files/file_path.h"
 #include "base/lazy_instance.h"
@@ skipping 36 matching lines @@
                                             int32* bugfix_version) {
   if (!g_chrome_os_version_numbers.Get().parsed) {
     // The other implementations of SysInfo don't block on the disk.
     // See http://code.google.com/p/chromium/issues/detail?id=60394
     // Perhaps the caller ought to cache this?
     // Temporary allowing while we work the bug out.
     ThreadRestrictions::ScopedAllowIO allow_io;
 
     FilePath path(kLinuxStandardBaseReleaseFile);
     std::string contents;
-    if (file_util::ReadFileToString(path, &contents)) {
+    if (ReadFileToString(path, &contents)) {
       g_chrome_os_version_numbers.Get().parsed = true;
       ParseLsbRelease(contents,
           &(g_chrome_os_version_numbers.Get().major_version),
           &(g_chrome_os_version_numbers.Get().minor_version),
           &(g_chrome_os_version_numbers.Get().bugfix_version));
     }
   }
   *major_version = g_chrome_os_version_numbers.Get().major_version;
   *minor_version = g_chrome_os_version_numbers.Get().minor_version;
   *bugfix_version = g_chrome_os_version_numbers.Get().bugfix_version;
@@ skipping 42 matching lines @@
     }
   }
 }
 
 // static
 FilePath SysInfo::GetLsbReleaseFilePath() {
   return FilePath(kLinuxStandardBaseReleaseFile);
 }
 
 }  // namespace base