Move Posix file utils to the base namespace.

BUG=
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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/chrome/common/logging_chrome.cc b/chrome/common/logging_chrome.cc
index d2272709..81d65723 100644
--- a/chrome/common/logging_chrome.cc
+++ b/chrome/common/logging_chrome.cc
@@ -176,12 +176,12 @@
       if (symlink_exists) // only warn if we might expect it to succeed.
         DPLOG(WARNING) << "Unable to unlink " << symlink_path.value();
     }
-    if (!file_util::CreateSymbolicLink(target_path, symlink_path)) {
+    if (!base::CreateSymbolicLink(target_path, symlink_path)) {
       DPLOG(ERROR) << "Unable to create symlink " << symlink_path.value()
                    << " pointing at " << target_path.value();
     }
   } else {
-    if (!file_util::ReadSymbolicLink(symlink_path, &target_path))
+    if (!base::ReadSymbolicLink(symlink_path, &target_path))
       DPLOG(ERROR) << "Unable to read symlink " << symlink_path.value();
   }
   return target_path;