Move Posix file utils to the base namespace.

BUG=
[email protected]

Review URL: https://codereview.chromium.org/89523002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@237642 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/base/base_paths_posix.cc b/base/base_paths_posix.cc
index 2d5fcbd..6b26ba8 100644
--- a/base/base_paths_posix.cc
+++ b/base/base_paths_posix.cc
@@ -36,7 +36,7 @@
     case base::FILE_MODULE: {  // TODO(evanm): is this correct?
 #if defined(OS_LINUX)
       FilePath bin_dir;
-      if (!file_util::ReadSymbolicLink(FilePath(kProcSelfExe), &bin_dir)) {
+      if (!ReadSymbolicLink(FilePath(kProcSelfExe), &bin_dir)) {
         NOTREACHED() << "Unable to resolve " << kProcSelfExe << ".";
         return false;
       }