Move some more file utils to the base namespace.

chrome/common/importer/firefox_importer_utils_linux.cc

Index: chrome/common/importer/firefox_importer_utils_linux.cc
diff --git a/chrome/common/importer/firefox_importer_utils_linux.cc b/chrome/common/importer/firefox_importer_utils_linux.cc
index 51868d5386d6ba13fcdcaf046a9255c990182f92..71f1a267a2796b640fe117ed8cc3bc12029a16ec 100644
--- a/chrome/common/importer/firefox_importer_utils_linux.cc
+++ b/chrome/common/importer/firefox_importer_utils_linux.cc
@@ -10,7 +10,7 @@ base::FilePath GetProfilesINI() {
   base::FilePath ini_file;
   // The default location of the profile folder containing user data is
   // under user HOME directory in .mozilla/firefox folder on Linux.
-  base::FilePath home = file_util::GetHomeDir();
+  base::FilePath home = base::GetHomeDir();
   if (!home.empty()) {
     ini_file = home.Append(".mozilla/firefox/profiles.ini");
   }